恒速传动装置有（）等三种工作方式。
A.启动、恒速、制动
B.顺转、反转、脱开
C.零差动、正差动、负差动
D.驱动、储能、反接
参考答案：C
We are going to _____ a food bank to hand out food to hungry people. [ ]
A. set up
B. pick up
C. think up
D. give up
青苗法
