水泵输送单位重量液体时，由泵进口至出口的能量增加值是指水泵的（）。
A、流量
B、扬程
C、功率
D、效率
参考答案：B
进口化妆品的标签审核按照我国的法律、法规、标准进行审核，出口化妆品的标签审核按照进口国的法律、法规、标准进行审核。品种和工艺相同而其他不同的化妆品可以合并提出标签审核申请( )
用括号里所给单词的适当形式填空。
1. Let Tom _____ (help)you to put it on the desk.
2. There are some boys _____ (play)football on the playground.
3. Can you _____ (pass)me my English book?
4. The boy wants _____ (take)these books to Mr. Wang's office.
5. Daming _____ (have)got a bike.
6. There _____ (be)some beef in the fridge.
7. How many people _____ (be)there in your shool
8. I _____ (be)from China.
9. Where _____ (be)you from?
10. All of us like _____(play)basketball.
