驱动装置主要由:电动机、减速器、驱动轮、联轴器和()组成。
A、从动轮
B、定位器
C、制动器
D、逆止器
参考答案:C
Not only Jim but also my parents and I ______ a few places of interest since we came to China.
A.has visited
B.will visit
C.have visited
D.visited
预提费用属于()。
A.负债
B.资产
C.费用
D.收入