单项选择题
A.on the windward side of the opening
B.on the leeward side of the opening
C.at a right angle to the wind direction
D.so that the obstruction of your body will protect you from the fumes
单项选择题 The stability of a vessel is normally the greatest when all fuel and water tanks are full because the （）.
单项选择题 Which of the following statements is true concerning Halon 1301 fire extinguishing equipment?（）
单项选择题 In order to find out which lifeboat you are assigned, you should look at the （）.