怎样选择调节阀的固有流量特征?
参考答案:
调节阀固有流量特征的选择,一般应从调节系统特性、负荷变化、S值的大小三个方面综合加以考虑。
A sense of __________ is the basic requirement for people working in the service industry, such as education and health care.
A.agreement
B.attention
C.carefulness
D.devotion
氯丙嗪不用于
A.低温麻醉
B.抑郁症
C.人工冬眠
D.精神分裂症
E.尿毒症呕吐