如需为避免碰撞或留有更多的时间估计局面,船舶应:().
A.采取大幅度转向
B.使用安全航速
C.运用良好船艺
D.减速、停车或倒车把船停住
参考答案:D
As a good friend of his, I offered Tom my congratulations ______ his passing the college entrance exams.
A.at
B.on
C.for
D.of