PD称为()控制算法。
A.比例
B.比例微分
C.比例积分
D.比例积分微分
参考答案:B
— How long_____like this?
— Three weeks! It's usual in here that rain_____without stopping these days of the year. [ ]
A. has it rained; pours
B. is it raining; is pouring
C. has it been raining; pours
D. does it rain; pours
按照地域范围划分,金融市场可以分为()。
Ⅰ.国际金融市场
Ⅱ.国内金融市场
Ⅲ.直接融资市场
Ⅳ.间接融资市场
A.Ⅰ、Ⅱ
B.Ⅰ、Ⅲ
C.Ⅰ、Ⅳ
D.Ⅱ、Ⅲ