单项选择题
What does ECDIS stand for?（）
A.Electrical Chart Display and Indication System
B.Electronic Chart Display and Information system
C.Electric Chart Display and Information System
D.Electronic Chart Display and Indicating system
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Bags are usually stowed in between the bulk grain（）.
A.to ventilate the hold
B.to separate the cargo
C.to replace shifting boards
D.to facilitate stowage -
单项选择题
When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision,they shall be deemed to be in（）.
A.head-on situation
B.crossing situation
C.overtaking situation
D.close-quarters situation -
单项选择题
Chart/Publication correction record Card system ensures that every chart is properly corrected（）.
A.in use
B.prior to use
C.after use
D.When chart received on board
