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单选题
At normal sea going, we use （） instead of donkey boiler.
A
a heater
B
a pre-heater
C
an exhaust gas boiler
D
the coal burning boiler
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单选题The vessel is out of harbor and in “Full Ahead”We are going to run fuel oil instead of （） and open the fuel oil heater steam valve.A
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单选题At sea, we can use（）to fix the ship’s position.A
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log
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单选题Duty officer informs us that the vessel is out of harbor and in “Full Ahead”We are going to run （）.A
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单选题We went right round to the west coast by _____ sea instead of driving across _____ continent.A
the; theB
/; theC
the; /D
/; /
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单选题We（）let go port anchor.A
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is going toC
were going toD
was going to
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