为了保证船舶的稳性,船舶在回转时必须注意避免()
A.低船速,大舵角回转
B.高船速,大舵角回转
C.低船速,小舵角回转
D.高船速,小舵角回转
参考答案:B
影响物流服务的可靠性的因素有().
A.备货时间
B.安全交货
C.订单的准确性
D.以上三者全是
I _____ to Canada twice. It's so beautiful. [ ]
A. won't go
B. have gone
C. don't go
D. have been