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[单选题]
系、离操作时船首尾需系解缆应经过谁的同意 1驾驶台 2引航员 3船长 4大副
A.③
B.②③④
C.④
D.①②④
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A.③
B.②③④
C.④
D.①②④
A.①②③④⑤
B.①②③④
C.③④⑤
D.①②④⑤
A.(1)(2)(3)(4)
B.(2)(1)(4)(3)
C.(3)(4)(1)(2)
D.(2)(1)(3)(4)
A.③ ④
B.①②
C.①②③ ④
D.②③
A.α1,α3.
B.α1,α2.
C.α1,α2,α3.
D.α2,α3,α4.
A.①~④
B.②④
C.①③④
D.③④