下列泵中理论流量与排出压力无关的是()。
A.喷射泵
B.离心泵
C.齿轮泵
D.旋涡泵
参考答案:C
She is in a poor ________of health, which worries her mother much.
A.position
B.situation
C.state
D.condition
盐炙时,每100kg药物,用食盐
A.1kg
B.2~3kg
C.8~10kg
D.5kg
E.15kg