电动机的发热主要与()有关。
A.电机的有效转矩
B.电机的温升
C.负载的工况
D.电机的体积
参考答案:B, C
---Aren’t you going to buy that house? It’s modern.
---Yes , it is . But I’m afraid I can’t ____such an expensive house
A.spare
B.share
C.spend
D.afford
Which of the following statement is least likely correct A speculative:()
A. stock is usually under priced.
B. company has highly risky assets.
C. stocks have a slight probability of an enormous return.