Camshafts are usually driven by timing

1、Cooling water pumps driven by direct r

Cooling water pumps driven by direct reversing diesel engines are usually of the straight impeller vane type pump with a concentric housing to...

2、When two power-driven vessels are meet

When two power-driven vessels are meeting head-on and there is a risk of collision,each shall（）.Astop her enginesBalter course to starboardCsound the danger signalDback dow

3、An emergency generator, driven by an i

An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）AweekB2 weeksCmonthD3 month

4、For a propeller direct driven by the e

For a propeller direct driven by the engine,（）.Athe thrust pads are while metal faced on both sidesBthe thrust pads are while metal faced on...

5、（） is usually driven by the engine cam

（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.AAn air receiverBAn operating valveCAn automatic valveDAn air distributor

6、20． —What time do you usually get up，J

20． —What time do you usually get up，John?—I usually get up at_________．A half past sixB half at sixC half after sixD six at half