"人无诚信不立"是指（）。 A.无论为人还是做事都应该"敬事而信" B.做人就必须修

By the end of last month, we had produced _____ as we did last year.

A．as twice many cars

B．twice many as cars

C．twice as many cars

D．as many cars twice

多系统器官功能衰竭最常见的首发器官是（）

A.肾

B.心

C.胃

D.肺

E.脾

足太阳膀胱经的络穴是

A．飞扬
B．束骨
C．申脉
D．昆仑
E．京骨

系统的开环传递函数为100/S^2（0.1S+1）（5S+4），则系统的型次为（）。

A.Ⅱ型

B.Ⅰ型

C.0型

D.系统不稳定