水泵铭牌上的流量指水泵在()下最佳工作状态时的出水量,它又称为额定流量。
参考答案:额定转速
治热毒咽痛宜选用的药物是( )
A.金银花B.连翘C.蒲公英D.紫花地丁E.板蓝根
There is ________ food. It’s enough for us to eat for a week.
A.too many
B.so many
C.very much
D.so much