单选题A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.Aflame arrestorBflame screenCdetonation arrestorDdetonation blocker
单选题
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.
A
flame arrestor
B
flame screen
C
detonation arrestor
D
detonation blocker
参考解析
解析：
暂无解析
相关考题：
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.A.large conical springsB.compressed air pressureC.hydraulic pressureD.exhaust gas pressure
()is very fast storage used to hold data.It connects directly to the microprocessor. A.CPUB.MemoryC.DiskD.I/0 device
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a ______.A.flame arrestorB.flame screenC.detonation arrestorD.detonation blocker
Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）A、the FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central officeB、the FXS interface connect directly to a standard telephone， fax machine， or sililar device and supplies ring， voltage， and dial toneC、the FXS interface connect directly to an IP phone and supplies ring， voltage， and dial toneD、the FXS interface connect directly to ISDN voice channels
Which statement is true about Foreign Exchange Station （FXS） ports on a router？（）A、The FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central office.B、The FXS interface connects directly to a standard telephone，fax machine，or similar device and supplies ring，voltage，and dial tone.C、The FXS interface connects directly to an IP phone and supplies ring，voltage，and dial tone.D、The FXS interface connects directly to ISDN voice channels.
A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? (Choose two.)（）A、hubB、routerC、switchD、STPE、subinterfacesF、VLAN
Which statement describes the distributed call control model in VoIP networks？（）A、The gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardownB、The gateway voice-capable device has a local call routing table configured through a routing protocol.C、The gateway voice-capable device relies on a call agent to support call control.D、The gateway voice-capable device relies on a gatekeeper to support call setup， call maintenance， and call teardown.
A company is installing IP phones. The phones and office computers connect to the same devicE.To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffiC.What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? （）A、hubB、routerC、switchD、STPE、subinterfacesF、VLAN
Which of the following is a bus mastering method？（）A、 A device transfers data directly to the memory.B、 A device handles mediation between the northbridge and the processor.C、 A device connects to another device without involving the processor.D、 A device transfers data to the processor and then on to the memory.E、 A device handles mediation between the southbridge and the processor.
When installing a wireless network in a large area, which of the following is the FIRST thing thatshould be considered when trying to get the MOST coverage?（）A、SSID namingB、Device placementC、Encryption methodsD、Channel selection
Which of the following protocols would a multilayer switch use to learn the IP address of a directly connected device？（）A、ARPB、BOOTPC、Inverse-ARPD、DNS
When setting up a wireless network to cover a large area, which of the following needs to beconsidered FIRST?（）A、Device placementB、Encryption methodsC、Wireless channelsD、SSID name
单选题If you must land on a beach with an oar-propelled lifeboat through a heavy surf，the recommended method is to（）.Akeep the bow directly in toward the beach，and tow the sea anchor off the sternBride in on the back of a large breakerCkeep the bow into the seas with the sea anchor out over the bow，and row to meet the breaking wavesDhead directly into the beach by staying between the crests of the waves
单选题A multistage centrifugal pump can be BEST described as having （）.Atwo or more impellers housed together in one casing and mounted on a single shaftBa single stepped impeller mounted in a progressively staged casingCa large radial clearance between the impeller and casing to prevent overheating due toDan increase in the discharge velocity of the liquid with a corresponding decrease in pressure through the stages
单选题A sling is a device used in（）.Ahoisting cargo aboard a vesselBhoisting personnel aboard a vesselCsecuring a small boat to a large vesselDhoisting the anchor
单选题Boilers and cylinders are（）.Araw metallic productsBfinished metallic productsCconsumable productsDManufactured goods of large Size
多选题A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device (Choose two.)（）。AhubBrouterCswitchDSTPEsubinterfacesFVLAN
多选题A company is installing IP phones. The phones and office computers connect to the same devicE.To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffiC.What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? （）AhubBrouterCswitchDSTPEsubinterfacesFVLAN
单选题A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.Acylinder headsBexhaust valvesCscavenging airDinjectors
多选题Which of the following is a bus mastering method?（）AA device transfers data directly to the memory.BA device handles mediation between the northbridge and the processor.CA device connects to another device without involving the processor.DA device transfers data to the processor and then on to the memory.EA device handles mediation between the southbridge and the processor
单选题（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.Afragile or expensive cargoesBraw materialsCfinished metallic productsDmanufactured goods of large size
单选题Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）Athe FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central officeBthe FXS interface connect directly to a standard telephone， fax machine， or sililar device and supplies ring， voltage， and dial toneCthe FXS interface connect directly to an IP phone and supplies ring， voltage， and dial toneDthe FXS interface connect directly to ISDN voice channels
单选题（） is (are) not power supplied by main switchboard directly.ASteering gear and windlassBNavigation light and radio power panelCNavigation device power boxDDaily fresh water pump
单选题The discharge head of a centrifugal pump will vary directly with the （）.Achange in impeller diameterBsquare of the impeller diameterCcube of the impeller diameterDimpeller efficiency for large changes in the size of the impeller
单选题The discharge rate or capacity of a centrifugal pump will vary directly as the （）.Achange in the impeller diameterBsquare of the impeller radiusCcube of the impeller diameterDimpeller efficiency for large changes in its size
单选题Which statement describes the distributed call control model in VoIP networks？（）AThe gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardownBThe gateway voice-capable device has a local call routing table configured through a routing protocol.CThe gateway voice-capable device relies on a call agent to support call control.DThe gateway voice-capable device relies on a gatekeeper to support call setup， call maintenance， and call teardown.
单选题The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by （）.Alarge conical springsBcompressed air pressureChydraulic pressureDexhaust gas pressure