A.has left
B.had left
C.has been away
D.had been away
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A.in
B.to
C.from
D.by
A.stand by
B.stand for
C.stood by
D.stood for
A.to pay attention
B.paying attention
C.pay attention
D.your paying attention
A.operated
B.made
C.run
D.done
A.which
B.what
C.that
D.whose
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The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
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Under MARPOL Code the ship to which it applies has to carry （）
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The ISPS Code consists of a mandatory section-Part A, which shows（）
The treatment of the fuel oils involves storage, heating, filtering and（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
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Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）