资产负债表中“预收账款”项目应根据“预付账款”和“预收账款”所属明细账贷方余额合计填

介词填空。

1. They help to educate the public about caring _____ the animals.

2. I agree _____ you.

3. It's hard _____ stop riding in cars.

4. I have never heard _____ the woman.

5. She makes model toys _____ old TVs.

6. The walls are made _____ old glass bottles.

7. It's polite to take a few flowers _____ a gift.

8. He was late _____ a business meeting.

指出下列不正确的是

A．鳖甲主治久疟疟母，经闭，癥瘕

B．墨旱莲滋阴益肾，凉血止血

C．天冬清肺降火，滋阴润燥，润肠通便

D．墨旱莲主治湿热痞满呕吐、泻痢、黄疸

E．女贞子主治阴虚血热的吐血、衄血、尿血、便血、崩漏

陶瓷纳米/微米颗粒的红外光谱的分析样品该如何制，为什么？

标准差不会是负数。