A chain bridle is used when towing astern because it().
A. Is easy to connect
B. Provides an effective catenary and absorbs shock due to its weight
C. Makes rigging a swivel unnecessary
D. Prevents the tow from yawing by the drag of the chains in a seaway
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每50小时必须对蓄电池的容量及液面高度进行检查。
A. 正确
B. 错误
车辆行驶中发生有车超越时,在条件许可的情况()。
A. 必须靠左让路
B. 并开左转向灯
C. 不准故意不让
D. 可以不让,加速行驶