更多"The grab rail of a metal lifeboat i"的相关试题:
[名词解释]城市轨道交通信号 urban rail transit signal
[单项选择]The common rail engines show great advantages in combustion especially（）.
A. at high speed and full load
B. at low speed and part load
C. when heavy fuel oil is used at sea
D. when the ships run long distance
[名词解释]城市轨道交通优先priority of urban rail transit
[单项选择]In the common rail system, excessive pressure in the header may be caused by （）
A. improper adjustment of the bypass valve
B. a dribble in the fuel injection nozzle
C. insufficient leak-off through injection nozzle packing
D. a malfunctioning injection nozzle
[单项选择]A common rail engine has only one or two high pressure pumps in operation at the same（）time, and the injection into each cylinder.
A. can’t be controlled very precisely
B. can’t be controlled as flexibly as the separate pump system
C. can be controlled as flexibly as the separate pump system
D. can be controlled more precisely and flexibly
[单项选择]In a common rail engine, the fuel is injected into cylinders（）
A. by injection pumps
B. at a time decided by the injection pump timing
C. by a signal opening the magnetic valves
D. at a time decided by the cam directly
[单项选择]In common rail engines, the fuel is（） before is injected into the cylinders.
A. stored in a common fuel line
B. pumped by the injection pump
C. at low pressure
D. already atomized
[单项选择]（）, the metal expands.
A. Heats
B. Heating
C. To heat
D. Heated
[单项选择]Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with（）.
A. abrasive particles
B. metallic oxides
C. corrosive acids
D. any or all of the above
[单项选择]Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.
A. flux
B. poles
C. magnets
D. azimuth
[单项选择]Additives （） protective layers on metal surfaces guarding them against corrosion.
A. damage
B. form
C. dissolve
D. contaminate
[单项选择]A metal object on the pier resembling a tree stump and made to receive mooring lines is a（）.
A. bight
B. bollard
C. chock
D. camel
[单项选择]Metal drums should be stowed（）with dunnage between tiers.
A. athwart
B. on end
C. bilge and cantline
D. bed
[单项选择]What is a step in attaching a poured metal socket to a wire rope?（）
A. Etch the wire with acid
B. Install a wire seizing on the wire that will be inside the socket
C. Ensure the fiber core is well lubricated
D. Pour molten babbitt metal into the socket
[单项选择]The metal，teardrop-shaped object sometimes used within an eyesplice is a（）.
A. grommet
B. reinforcement
C. splice form
D. thimble
[单项选择]Metal plates that cover the top of the hawsepipe are called（）.
A. footings
B. plugs
C. buckler plates
D. stop waters
[单项选择]The main bearing metal is a lining （）.
A. inside the bearing
B. outside the bearing
C. covering the crankshaft
D. none of the above
[单项选择]在j2ee中，mywebapp目录是一个web应用程序根目录，当在浏览器中输入http：//localhost：8080/mywebapp/时，会自动打开该目录下的start.jsp文家。为了达到这个要求，需要在web.xml中添加如下代码（）
A. start.jsp
B. start.jsp
C. start.jsp
D. start.jsp
[单项选择]在J2ee中，myWebApp目录是一个Web应用程序根目录，当在浏览器中输入http：//localhost：8080/myWebApp/时，会自动打开该目录下的start.jsp文件。为了达到这个要求，需要在web.xml中添加如下代码（）。
A. start.jsp
B. start.jsp
C. start.jsp
D. start.jsp
