【名词&注释】
灭火机(fire extinguisher)、总重量(total weight)
[单选题]What is the function of the after-coolers installed in the diesel engine air intake system?
A. Decrease the air density
B. Increase the exhaust temperature
C. Decrease the lube oil temperature
D. Increase the air density
查看答案&解析
举一反三：
[单选题]木屑和草袋用于吸附船上溢油时，应在溢油的_______使用。
A. 上游
B. 下游
C. 上、下游
D. 中游
[单选题]A ship in Hong Kong will sail for Port Said passing through the ________
A. Panama Canal
B. Grand Canal
C. Kiel Canal
D. Suez Canal
[单选题]干粉灭火机驱动气瓶内气体的总重量减少______以上时应立即补充
A. 1/5
B. 1/10
C. 1/20
D. 1/4
[单选题]Li Ming and I ________ seamen.
A. am
B. is
C. are
D. shall be
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