风险就是指损失的大小。()
参考答案:错
解析:
风险并不等于损失本身。
The stadium is so _____ that once it is begun, nothing can be changed. [ ]
A. planned
B. made
C. designed
D. produced
直流电动机反接制动的原理实际上是与直流电动机的反转原理一样的。