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【多选题】
What information should be included in the body of a notice?A.
time
B.
place
C.
event
D.
attendees
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举一反三
【单选题】Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form. on the engine parts?
A.
Flash point improvers
B.
Pour point improvers
C.
Inhibitors
D.
Foam suppressors
【单选题】已知空气的密度ρ为1.205kg/m3，动力黏度(动力黏滞系数)μ为1.83×10-5Pa·s，那么它的运动黏度(运动黏滞系数)υ为( )。
A.
2.2×10-5s/m2
B.
2.2×10-5m2/s
C.
15.2×10-6s/m2
D.
15.2×10-6m2/s
【单选题】Sea water is not directly used as a coolant for engines because of its _____.
A.
low specific heat
B.
corrosive action
C.
high expense
D.
acid property
【简答题】国际连续出版物编号为（）
【单选题】下列( )不属于质量保证金赔偿的范围。
A.
旅行社违约行为造成旅游者经济权益损失的
B.
旅行社因破产造成预收旅行费损失的
C.
旅行社因解散造成预收旅行费损失的
D.
旅行社因不可抗力因素不能履行合同的
【单选题】______ is a casing used for exhaust pipes from the engines.
A.
the funnel
B.
the messroom
C.
the galley
D.
the satellite antenna
【单选题】下列()不属于质量保证金赔偿的范围。
A.
旅行社因违约行为造成旅游者经济权益损失的
B.
旅行社因破产造成预收旅行费损失的
C.
旅行社因解散造成预收旅行费损失的
D.
旅行社因不可抗力因素不能履行合同的
【单选题】_____ the engines, the diesel engine is ____ used engine on board
A.
Between / more commonly
B.
Among / the most commonly
C.
Between / not more commonly
D.
Among / not the most commonly
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