起钻时产生过大的抽汲压力,是导致溢流发生的一个主要的原因。()
参考答案:对
Scarcely had the van turned the comer than the mirror came off.
A.No more
B.No sooner
C.Not any
D.No longer
转向避让时,为获得相同的避让效果,慢船应比快船:()
A.转得早转得大
B.转得早转得小
C.一样
D.转得大转得晚