Some cranes are mounted in pairs on a common platform. which can be rotated through_____.A.360oB.270oC.180oD.90o
Some cranes are mounted in pairs on a common platform. which can be rotated through_____.
A.360o
B.270o
C.180o
D.90o
相关考题:
But the Internet can bring some()effects, too. The most common one, some teenagers are addicted to computer games on the Internet.A. negativeB. positiveC. important
which of the following can help train speaking? () A. Simon says.B. Pairs finding.C. Listen and follow instructions.D. Match captions with pictures.
We can learn from the second paragraph of the passage that there are some equations of market which can explain the demand and supply of the currency of a country.A.RightB.WrongC.Doesn't say
Which three statements are true about the working of system privileges in a multitenant control database(CDB) that has pluggable databases (PDBs)?() A. System privileges apply only to the PDB in which they are used.B. Local users cannot use local system privileges on the schema of a common user.C. The granter of system privileges must possess the set container privilege.D. Common users connected to a PDB can exercise privileges across other PDBs.E. System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.
Your multitenant container database (CDB) contains some pluggable databases (PDBs), you execute the following command in the root container:Which two statements are true?() A. Schema objects owned by the C# # A_ADMIN common user can be shared across all PDBs.B. The C # # A_ADMIN user will be able to use the TEMP_TS temporary tablespace only in root.C. The command will, create a common user whose description is contained in the root and each pdb.D. The schema for the common user C # # A_ADMIN can be different in each container.E. The command will create a user in the root container only because the container clause is not used
Please draw schematic of a common SRAM cell with 6 transistors,point out which nodes can store data and which node is word line control? (威盛笔试题circuit design-beijing-03.11.09)
第一组Older loop scavenged engines may have a single injector mounted centrally in the cylinder head. Because the exhaust valve is in the center of the cylinder head on modern uniflow scavenged engines the fuel valves (2 or 3) are arranged around the periphery of the head. The pressure at which the injector operates can be adjusted by adjusting the loading on the spring. The pressures at which the injectors operate vary depending on the engine, but can be as high as 540 bar. Some injectors have internal cooling passages in them extending into the nozzle through which cooling water is circulated. This is to prevent overheating and burning of the nozzle tip. Injectors on modern engines do not have internal cooling passages. They are cooled by a combination of the intensive bore cooling in the cylinder head being close to the valve pockets and by the fuel which is re-circulated through the injector when the follower is on the base of the cam or when the engine is stopped. As well as cooling the injector, re-circulating the fuel when the engine is stopped keeps the fuel at the correct viscosity for injection by preventing it from cooling down. Fuel injectors must be kept in good condition to maintain optimum efficiency, and to prevent conditions arising which could lead to damage within the cylinder. Injectors should be changed in line with manufacturers recommendations, overhauled and tested. Springs can weaken with repeated operation leading to the injector opening at a lower pressure than designed. The needle valve and seat can wear which together with worn nozzle holes will lead to incorrect atomization and dribbling.Modern uniflow scavenged engines have______.A.a single injector mounted in the center of the cylinder headB.several injectors mounted around the external boundary of the cylinder headC.a single injector mounted at the external boundary of the cylinder headD.several injectors mounted in the center of the cylinder head
Which of the following statements is true according to the passage?A.Qigong can cure some diseases.B.Qigong can not cure any disease.C.Qigong can cure all kinds of incurable diseases.D.Qigong can cure some patients from danger.
Which statement is TRUE concerning the tandem working arrangement of pedestal cranes when completing a quad lift?A.The discharge is slow due to the size of the cargo and all the cranes working togetherB.The cargo discharge can be accomplished with controlled pendulationC.The cargo discharge can be performed in port or at anchorD.The cranes enable the handling of heavy cargos without shoreside assistance
Which of the following statement(s)is/are FALSE regarding a twin pedestal crane set ________.A.The cranes may be operated independentlyB.The cranes may be interconnected for twin operationC.The cranes are powered by independent internal combustion power unitsD.All of the above
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels ________.A.A centerline crane can never be operated in tandemB.One crane is able to work one end of two adjacent hatchesC.These cranes are more economical and weigh less than outboard-mounted cranesD.One crane is able to work both sides of the ship
Which of the following statements is TRUE regarding crane operations ________.A.Radio communications allow the crane operator to disregard the use of hand signalsB.The crane operators and signalman must be familiar with the correct hand signalsC.The forward cranes can be operated from the bridgeD.The aft cranes can be operated from the aft steering station
A WORM drive can be equated to which of the following common technologies?()A、 CDRWB、 CDRC、 Flash MediaD、 DVDRW
Which two statements are correct regarding Flex Links? ()A、 An interface can belong to multiple Flex Links.B、 Flex Links operate only over single pairs of links.C、 Flex Link pairs must be of the same interface typeD、 Flex Links automatically disable STP so no BPDUs are propagatedE、 Failover from active to standby on Flex Links takes less than a second
Which three statements are true about the working of system privileges in a multitenant control database(CDB) that has pluggable databases (PDBs)?()A、System privileges apply only to the PDB in which they are used.B、Local users cannot use local system privileges on the schema of a common user.C、The granter of system privileges must possess the set container privilege.D、Common users connected to a PDB can exercise privileges across other PDBs.E、System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.
单选题Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels().AA centerline crane can never be operated in tandemBOne crane is able to work one end of two adjacent hatchesCThese cranes are more economical and weigh less than outboard-mounted cranesDOne crane is able to work both sides of the ship
单选题Some cranes are mounted in pairs on a common platform which can be rotated through().A360°B270°C180°D90°
单选题The safety valves are mounted in pairs to () the boiler against overpressure.AuseBreleaseCprotectDeffect
单选题Which of the following statements is TRUE regarding crane operations().ARadio communications allow the crane operator to disregard the use of hand signalsBThe crane operators and signalman must be familiar with the correct hand signalsCThe forward cranes can be operated from the bridgeDThe aft cranes can be operated from the aft steering station
单选题Which of the following statement(s)is/are FALSE regarding a twin pedestal crane set ().AThe cranes may be operated independentlyBThe cranes may be interconnected for twin operationCThe cranes are powered by independent internal combustion power unitsDAll of the above
单选题“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft()Aa centrifugeBan electric motorCa bowl assemblyDa driving motor
单选题Which two terms can best describe the following pairs of words: table—tables, day + break—daybreak.Ainflection and compoundBcompound and derivationCinflection and derivation
多选题Your multitenant container database (CDB) contains some pluggable databases (PDBs), you execute the following command in the root container: Which two statements are true?()ASchema objects owned by the C# # A_ADMIN common user can be shared across all PDBs.BThe C # # A_ADMIN user will be able to use the TEMP_TS temporary tablespace only in root.CThe command will, create a common user whose description is contained in the root and each pdb.DThe schema for the common user C # # A_ADMIN can be different in each container.EThe command will create a user in the root container only because the container clause is not used
单选题A WORM drive can be equated to which of the following common technologies?()A CDRWB CDRC Flash MediaD DVDRW
单选题() are mounted in pairs to protect the boiler against overpressure.ASafety valvesBWater tubesCSteam stop valvesDBlow down valves
多选题Which three statements are true about the working of system privileges in a multitenant control database(CDB) that has pluggable databases (PDBs)?()ASystem privileges apply only to the PDB in which they are used.BLocal users cannot use local system privileges on the schema of a common user.CThe granter of system privileges must possess the set container privilege.DCommon users connected to a PDB can exercise privileges across other PDBs.ESystem privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.