单项选择题
A.on the lee side
B.on the windward side
C.with the wind dead ahead
D.with the wind from astern
单项选择题 In painting a lifeboat following its overhaul，which parts must be painted bright red?（）
单项选择题 In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system，there must be（）.
单项选择题 If the survival craft is not loaded to full capacity，the personnel should be（）.