定期租船中,船舶所有人负责()。
A.任命船长
B.装船、积载、平舱、卸船等
C.船舶在交船时处于有效使用状态
D.船舶在租期内处于有效使用状态
参考答案:A, C, D
— He is in his late 40s now and still single.
— It is high time he______himself a wife and settled down. [ ]
A. has to get
B. will get
C. gets
D. got
磁粉探伤中使用的磁化电流包括交流、直流和()磁化电流。