柏努利方程式中的we项表示单位质量流体通过泵（或其他输送设备）所获得的能量，称为（）。
A.位能；
B.动能；
C.静压能；
D.有效功。
参考答案：D
用补益药治疗闭塞不通症状的病证，属于（）
A．热因热用
B．寒因寒用
C．塞因塞用
D．通因通用
E．熟者寒之
用括号内所给单词的适当形式填空。
1. On _______ (rain) days, we'd better _______ (stay) at home to do some reading.
2. Our plan is _______ (walk) in the countryside.
3. The sun is _______ (shine) brightly at the moment.
4. There will be _______ (wind) in Shanghai tomorrow.
5. It's much _______ (wet) than it was yesterday.
ind) in Shanghai tomorrow.