单项选择题

The International Sewage Pollution Prevention Certificate shall be issued for a period specified by the Administration, which shall not exceed from the date of issue（）

A.six months
B.one year
C.three year
D.five years

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单项选择题

When the ship is in restricted visibility, the officer in charge of the engineering watch shall ensure that （）
Ⅰ.Bridge order relating to changes in speed or direction of operation areimmediately implemented
Ⅱ.auxiliary machinery used for maneuvering is readily available
Ⅲ.permanent air or steam pressure is available for sound signals

A.Ⅰ+Ⅱ
B.Ⅰ+Ⅲ
C.Ⅱ+Ⅲ
D.Ⅰ+Ⅱ+Ⅲ

单项选择题

The officer in charge of the engineering watch shall notify the chief engineer without delay （）.

A.in any emergency or if in any doubt as to what decision or measures to take
B.in the event of any impending action in machinery spaces that may cause reduction in ship’s speed
C.when isolating and bypassing machinery to be worked on
D.co-operating with any engineer in charge of maintenance work

单项选择题

When the machinery spaces are in the periodic unmanned condition, shall be immediately available and on call to attend the machinery space（）.

A.the chief engineer
B.the designated engineer from shipyard
C.the designated duty officer in charge of the engineering watch
D.the designated surveyor from classification society