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
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
相关考题：
Although a ship usually has repair in a shipyard, ________ is also necessaryA.the general repair on boardB.the voyage repairC.the annual repairD.the dock repair
According to the passage，quicksand is usually found______.A. on hillsidesB. far inlandC. near waterD. on prairies
The reason why the market for large CDs has been active since 1961 may be that the yield is usually higher than Treasury bills.A．RightB．WrongC．Doesn't say
The actual marketing for new issues ______.A．is usually done by investment bankers indirectly to the publicB．is, most of the time, done by the companies directly to the publicC．is never done by the companies directly to the publicD．is usually done by the investment banker directly to the public
Primary memory is stored on chips located(66). In addition, computers usually use disks as second memory, for example,(67)disks located inside the computer.A．on the motherboardB．outsideC．inside the processorD．on the CPU
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a ______.A.slipwayB.graving dockC.ground warpD.caisson dock
We expect ____ large orders from Europe in the near future.A、receiveB、to receiveC、to receivingD、being received
The oil is usually pumped into ship at the loading port by（）.A、ship’s own pumpsB、shore pumpsC、large pipesD、large tubes
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.
单选题A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.AslipwayBgraving dockCground warpDcaisson dock
单选题The apartment is conveniently located near the railway station, _____ the rent is quite reasonable.AmoreoverBconsequentlyChoweverDunimaginably
单选题In the management of the shafting, because（） carry heavy load and caused high temperature easily, it should be paid attention.Athe bearing near to the diesel engineBthe intermediate bearing near to the thrust bearingCthe intermediate bearing near to the sterntubeDthe bearing located at the middle of the diesel engine and the sterntube
单选题Which of the following items don’t belong to dock repair works?（）Athe SW outboard valvesBthe tailshaft LO stop valveCthe drain valve of the boilerDpropeller shaft sealing device
单选题Which of the following items don’t belong to dock repair works?（）Amaking the repair list, booking spare parts and special tools for the dock repairBshutting off all of the SW valves to outboardCthe sketches or diagrams used for the dock repairDcleaning up the oil tank and boiler before enter the dock
单选题The crane is usually mounted on a pedestal to offer adequate （） to the operator.AtimeBspaceClengthDvisibility
单选题Boilers and cylinders are（）.Araw metallic productsBfinished metallic productsCconsumable productsDManufactured goods of large Size
单选题A large basin cut into the shore，closed off by a caisson，and used for drydocking of ships is known as a（）.AslipwayBgraving dockCground warpDcaisson dock
单选题In the absence of external forces, the center of gravity of a floating vessel is located directly above the（）.AmetacenterBamidshipsCcenter of floatationDgeometric center of the displaced volume
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Controls for a fixed carbon dioxide system shall be mounted（）.Adirectly outside the space protected by the systemBas near the gas cylinders as possibleCin the pilothouseDon the main deck near the bow
单选题The lube oil in the bearings is drawn from a （）, usually located in the bedplate.AtankBsumpCvesselDbottle
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