相邻两个常用的长度单位之间的进率是100．______．（判断对错）

牲畜口蹄疫的潜伏期最长是（）天。

A.7

B.10

C.14

D.20

根据句意和空缺处所给首字母写单词。

1. My English is poor. Could you h_____ me with it, Ben?

2. Don't w_____. I can help you.

3. Would you like to go to the z_____to see tigers with me?

4. Don't f_____ to bring your guitar.

5. Mike often g_____up at 6:40 in the morning.

现行《中小学校教室采光和照明卫生标准》规定，教室黑板面的平均照度不应低于（）

A.100lx

B.120lx

C.150lx

D.200lx

E.250lx

带式输送机是如何分类的？火电厂采用最广泛的是哪种输送设备？

怎么通过手机阅读客户端查找图书？