While off-loading from an offshore supply vessel with the crane，the wind increases in strength and changes direction significantly，you should ______．
A. Expedite off-loading
B. Stop off-loading，but keep the offshore supply vessel in the present location
Continue off-loading with no changes
D. Move the offshore supply vessel to the downwind side
查看答案
Which wire rope purchases may be used with a 30-ton pedestal crane ________．
A. Hoist
B. Luff
C. Rider block
D. All of the above
Which tanker discharge pattern would be the safest and most efficient ________．
A. Empty the forward tanks and start working aft，emptying each tank in sequence
B. Start discharging with most of the discharge coming from forward，but include some from midships and after tanks
C. Start pumping from forward，midships，and aft with the discharge distributed equally among the tanks
D. Start pumping from midships and then work forward and aft simultaneously as the midships tank is emptied
The ship is listing too much due to your faulty method in loading operation．You must keep
A. flat
B. up
C. upright
D. vertical
肠杆菌科的主要生化特征包括
A. 发酵葡萄糖
B. 触酶试验阳性
C. 氧化酶阴性
D. 硝硝酸盐还原试验阳性
E. 以上均是
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