操舵装置包括()
A.操舵装置控制系统;
B.舵机和舵;
C.舵和转舵装置;
D.舵机和转舵装置。
参考答案:D
第二次世界大战后,资本主义世界经济霸主是 [ ]
A、美国
B、日本
C、法国
D、英国
Jack has got into _______ habit of collecting newspaper cuttings, which is _______ great joy for him.
A.\ ; a
B.a; the
C.the; a
D.the; the