单选
Shore power must be ( ) during dock repair.
相关试题
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What does the picture show? It’s a ____________.
- A.lifeboat
- B.life buoy
- C.light
-
The unit of electric voltage is the ( ).
- A.ohm
- B.volt
- C.watt
-
Whom are you looking for? I am looking for ( )
- A.an instruction book
- B.plan
- C.your chief engineer
-
I'd like to call on you tomorrow if it is convenient for you
- A.Of course,you are welcome
- B.Don't mention it
- C.Never mind
-
The engineer on duty ( )the engine movement in the logbook now.
- A.puts down
- B.is putting down
- C.is put down
-
( ) should be blown with compressed air after being welde
- A.The indicator
- B.The piping system
- C.The fuel injection
-
Water and foreign matters are separated ( ) in the oil separator.
- A.from bilge water
- B.from fuel oil
- C.from ballast water
-
Fires involving combustible metals are classified as ( ).
- A.class A and B
- B.class C fires
- C.class D fires
-
Shore power must be ( ) during dock repair.
- A.connected
- B.cut off
- C.switched off
-
Bilges may be pumped ( ).
- A.on the outgoing tide
- B.overboard after dark
- C.overboard through an oil waterseparator
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