以下关于差模信号和共模信号的计算，哪种说法是正确的？（）A、差模信号为两个输入信号的

句型转换。

1. Tim has already finished reading the book. (改为否定句)

    Tim _________ finished reading the book _________.

2. I expect they will go to see him from time to time.(改为同义句)

     I expect they will go to see him __________.

3. They have lived in this block since they moved to Nanjing. (对划部分提问).

     _________ have they lived in this block?

4. He was so excited that he couldn't say a word. (同义句转换)

    He was _________ excited _________ say a word.

5. Everything was beautiful. I wanted to live in it. (用适当的连词将两句合并成一句)

    Everything was _________ beautiful _________ I want to live in it.

Whale beachings（搁浅）_______ be caused by factors such as illness, or disorientation（迷失方向）caused by extra noise in the oceans, ______ shipping or oil and gas drilling.

A．might; from

B．will; by

C．should; in

D．shall; on

对发热为主诉的患者问诊要点包括哪些？

不锈钢按正火状态下的组织不同分为（）。

A.珠光体不锈钢

B.马氏体不锈钢

C.铁素体不锈钢

D.奥氏体不锈钢

E.莱氏体不锈钢

F.奥氏体-铁素体型不锈钢

When within the entrance, the vessel should（）surf islet.

A.navigate

B.arrive at

C.steer for

D.maneuver for