单项选择题
A.a certain area
B.all ocean areas
C.some areas
D.important areas
单项选择题 Especially in adverse weather,risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit?().
单项选择题 During the voyage my ship()bad weather in the Pacific Ocean.
单项选择题 During the voyage he encountered boisterous winds and heavy weather during which time the vessel()heavily and to such an extent that at times it was necessary to change course.