单项选择题
To（）sanitary water from any vessel，an application shall be made to Harbor Authorities for approval.
A.discharge
B.recircle
C.load
D.take in
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These weights are（）the ship’s discharging facilities．
A.out
B.beyond
C.from
D.off -
单项选择题
The valve on the discharge side of a cargo pump on a tanker will usually be a（）.
A.butterfly valve
B.spectacle valve
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单项选择题
The tricing pendants should be released（）.
A.before the gripes are removed
B.before loading the passengers
C.after loading the passengers
D.after the boat is afloat
