单项选择题

Which factor has the greatest effect on the amount of gain required to obtain a fathometer reading?（）

A.Salinity of water
B.Temperature of water
C.Atmospheric pressure
D.Type of bottom

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单项选择题

The standards of physical and medical fitness established by the Party shall not ensure that seafarers（）.

A.have the physical capability to fulfill all the requirements of the basic training
B.demonstrate adequate hearing and speech to communicate effectively
C.are suffering from any medical conditions likely to be aggravated by service at sea
D.have no medical condition that will prevent the effective e and safe conduct of their routine and emergency duties on board

单项选择题

The maneuverability of the ship is considered（）if the following criteria are complied with.

A.satisfactory
B.satisfactorily
C.smooth
D.smoothly

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