单项选择题

OAP IF ANY TO BE CHTRS ACCT BUT OWNERS CONTRIBUTION USD 0.3/MT. What doesOAP stand for?（）

A.Old Age Pension
B.Overage Additional Premium
C.Organization of Arab Petroleum countries
D.Optimum amplitude and phase modulation

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单项选择题

A.should be done to
B.should not be done to
C.must be done with
D.must not be done with

单项选择题

A.with，of
B.in，of
C.at，apart
D.with，from

单项选择题

A.in life jackets
B.with life jackets
C.with life jackets on
D.putting on life jackets