is true friendship is that he or she would like to do all she can           his or her friends when they are in trouble．

A．What；help

B．It；to help

C．What；to help

D．Which；help

下列有关高空、舷外作业安全注意事项哪项是错误的（）？

A.船体摇晃明显，航行中禁止舷外作业

B.值班驾驶员对本班人员的高空或舷外作业安全负有责任

C.船体摇晃明显时，如无特殊需要，禁止高空作业

D.船体摇晃明显时，无论何种情况，都禁止高空作业