电操舵装置随动控制系统的特点是：（） ①、转动舵轮可随之转出

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问题单项选择题

电操舵装置随动控制系统的特点是：（）

①、转动舵轮可随之转出舵角；②、舵轮停转，舵角不变；③、舵轮转动角度与舵叶偏转的角度相等

A.①、②

B.①、③

C.②、③

D.①、②、③

答案

参考答案：D

填空题

选用 by, with, in, through, use填空.

1. He dug a hole in the ground _ his bare hands.

2. May I your knife to cut my pencil?

3. He said a low voice,"Go to your seat."

4. You can make a living borrowing some money from your friends.

5. They have made much progress____ their hard work.

单项选择题

对侧肾良好，患侧肾动脉损伤，可施行

A．肾切除术

B．部分肾切除术

C．肾脏修补术

D．选择性肾动脉栓塞术

E．血管修复术