海船船员考试
单选题Camshafts are usually driven by timing gears or （）.A push rodsB chain drivesC rocker armsD flywheels
题目
push rods
chain drives
rocker arms
flywheels
相似问题和答案
第1题：
Lubrication for the main reduction gears used with diesel engines is usually supplied by
A.oil from the main engine sump
B.an independent lube oil system
C.the stern bearing head tank
D.the stem bearing sump tank
第2题：
A.DUS
B.line timing
C.loop timing
D.internal timing
E.through timing
第3题：
Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.
A.gears
B.rams
C.barrels
D.cams
第4题：
如何变更Google Gears的设定？
正确答案: 请在浏览器中，按下菜单>其他>设定>Gears设定。
第5题：
这些舱盖通常是用电力或液压驱动的。（）
- A、These hatches are usually driven by electric or hydraulic power.
- B、These hatch covers are usually driven by electric or hydraulic power.
- C、These hatch covers are usually driven by electric.
- D、These hatch covers are usually driven by hydraulic power.
正确答案:B
第6题：
_______is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.
A.An air receiver
B.An operating valve
C.An automatic valve
D.An air distributor
第7题：
Which timing mode is appropriate for an SDH NE that is adjacent to an SDH NE Bits-1 timing？ （）
- A、 DUS
- B、 line timing
- C、 loop timing
- D、 internal timing
- E、 through timing
正确答案:B
第8题：
A controllable pitch propeller on a diesel driven vessel eliminates the need for
A.friction clutches
B.disconnect clutches
C.reversing gears
D.reduction gears
第9题：
什么是Google Gears？
正确答案:使用浏览器造访googlE.com时，设备可能会要求您允许使用储存空间。这是因为GoogleGears会在您使用Google应用程序时将信息储存在电话上，如此一来，当您无法使用数据联机时，还可以继续使用Google服务。
第10题：
Which timing mode is appropriate for a SONET NE that is adjacent to a SONET NE using BITS-1 timing source?（）
- A、DUS
- B、line timing
- C、loop timing
- D、internal timing
- E、through timing
正确答案:B