交流异步电动机起动瞬间转差率的值()。
A.等于0
B.接近于0
C.等于1
D.接近于1
参考答案:C
A.(A) I have finished my lunch.
B.(B) I can’t wait to make the phone call.
C.(C) I have to stay in the office.
D.(D) I don’t like to eat in the cafeteria.
分析杜邦指标体系可以看出,资产负债率越高,净资产收益率就越高,但财务风险也越大,这是利用财务杠杆作用的结果。( )