以下关于PDCA的说法不正确的是( )。A．PDCA是目标控制的基本方法 B．检查

中兴网管提供两种网管备份方式（）和DBMAN工具备份方式。

I have had my bike _______ , and I'm going to have somebody _______ my radio    tomorrow．

A．repair; to repair

B．repairing; to be repaired

C．repaired; repair

D．to repair; repairing

S700K转辙机摩擦连接器的摩擦力必须由专业人员用（）。

根据括号内的要求完成下列句子。

1. Tom has to stay at home on Sunday. (改为否定句)

    Tom _____ _____ to stay at home on Sunday.

2. He can seldom finish his homework by himself, _____ _____? (反意疑问句)

3. The teacher told us it. England is an island. (改为宾语从句) 

    The teacher told us England ______ an island.

4. The Pacific Ocean is the largest ocean in the world. (同义句)

    The Pacific Ocean is larger than ______ _____ ocean in the world.

5. It is a nice sunny day today. (感叹句)

    _______ _______ nice sunny day it is today!

铜绿假单胞菌可产生的致病物质是（）

A.内毒素，外毒素，菌毛

B.内毒素，外毒素，芽胞

C.内毒素，菌毛，芽胞

D.外毒素，菌毛，芽胞

E.外毒素，菌毛，黏附素