（）, so they are widely used on board s

（）, so they are widely used on board ship nowadays.

ADiesel engines have more advantages in comparison with gasoline engines
BDiesel engines have more advantages in comparison to gasoline engines
CGasoline engines have more advantages in comparison with diesel engines
DGasoline engines have more advantages in comparison to diesel engine

参考答案

参考解析：

分类：船舶动力装置题库,海船船员考试题库

Ships are always（）on water and they are easy to rust.AfloatBfloatingCfloatsDfloated

2、Place names used on board ships should

Place names used on board ships should be those （）.Aspecified by international authoritiesBspecified by national authoritiesCon standard mapDon the chart or Sailing Directions in use

3、Isobars on a synoptic chart are useful

Isobars on a synoptic chart are useful in predicting（）.AtemperatureBdew pointCwind velocityDrelative humidity

4、the engineer are so busy that they hav

the engineer are so busy that they have zero time for outdoor sports activities, ___they have the interest.A whereverB WheneverC even ifD as if

5、（）on board ship are used to control an

（）on board ship are used to control and distribute the electrical energy generated by generators.AA.GovernorsBB.AlternatorsCC.BlackboardsDD.Switchboards

6、Fire extinguishers used on ship’s are

Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.Aused for electrical fires onlyBthe smallestCthe most accessibleDthe most effective

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