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單項(xiàng)選擇題

（）is an opening for supplying seawater to condensers, pumps,etclocated in the hull below the waterline and having means for the attachment of associated piping.

A.SEA CHEST
B.SCUPPER
C.SCUTTLE
D.SEA PORT

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單項(xiàng)選擇題

（）is a function of the reactive / resistive characteristics of the load items and cannot be adjusted by manipulating the alternator control devices.

A.Power factor
B.Power ratio
C.compression ratio
D.Compression factor

單項(xiàng)選擇題

The pump used to send the bilge water into the oily water separator（）the mixture because this might create finer oil particles.

A.should agitate
B.should not agitate
C.should mix up
D.should not add up