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有很多烟但没有火焰。
A. There is a lot of smoke and flame.
B. There isn't any smoke or flame.
C. There is a lot of smoke but no flame.
D. There is a lot of flame but no smoke.
他们的主机有问题。
A. They have problems with auxiliary engine.
B. They have problems with main engine.
C. They have problems with bilge pump.
D. They have problems with ballast pump.
启动备用泵
A. To stop the main engine.
B. To start the stand-by pump.
C. To repair the stand-by pump.
D. To replace the stand-by pump.
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