SH320推土机所用的变矩器是（）。
A.三元件
B.四元件
C.一级
D.一相
参考答案：A, C, D
______ made the parents proud was ______ their daughter had been admitted into Peking University.
A．What; that
B．What; because
C．That; what
D．That; because
获得功能的突变
