【名词&注释】
不一定(not always)
[单选题]平衡舵是舵的旋转轴线位于()。
A. 舵叶上半部分的中间
B. 舵叶下半部分的中间
C. 舵叶的中间
D. 舵叶的一侧
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学习资料:
[单选题]某曲柄的两主轴承在水平平面内位置偏右,曲轴轴线呈右拱形,则其Δ-()。
A. >0
B. <0
C. =0
D. 不一定
[单选题]() is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.
A. The fuel oil
B. The lube oil
C. The sea water
D. The fresh water
[单选题]With regards to a diesel engine crankcase explosion, the most violent is the()(1) primary explosion(2) secondary explosion
A. (1) only
B. (2) only
C. both (1) and (2)
D. neither (1) or (2)
[单选题]Please supply my vessel()120 tons of diesel oil.
A. for
B. with
C. to
D. o
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