()方法多用于场地条件比较困难的情况下。 A.单机斜吊法 B.单机旋转吊装法 C.双

题型:单项选择题

问题:

()方法多用于场地条件比较困难的情况下。

A.单机斜吊法

B.单机旋转吊装法

C.双机滑行抬吊法

D.单机滑行吊装法

考点:机械员机械员综合练习机械员综合练习题库
题型:单项选择题

请将“施、挠、铲、艰、毅、劣、惹、寝、挚”按音序工整地抄写在横线上。

_________________________________________

题型:单项选择题

Certainly, I’d love to.
Who’s that?
Yes, I love it.
OK. I’ll get there at four.
What’s up?
Let’s meet at the gate of the post office at five o’clock.
A: Hello, is that Li Hong speaking?
B: Yes. 1. __________
A: This is Wang Chun. Are you free this Sunday evening?
B: Yes. 2. __________
A: I’ve got three tickets to Han Hong’s concert. Would you like to go with me?
B:3. __________ She is my favorite singer. Thanks for your invitation. When and where shall we meet?
A: 4. __________
B: Could you please get there earlier? I want to buy some flowers for her.
A: 5. __________ Shall we go to the flower shop to buy them?
B: Sounds good. See you later.
A: See you.
题型:单项选择题

某发电厂(或变电所)的220kV配电装置地处海拔高度3000m,盐密为0.18mg/cm2,采用户外敞开式中型布置,构架高度为20m,220kV采用无间隙金属氧化物避雷器和避雷针作为雷电过电压保护。请回答下列各题。(计算保留两位小数)

()220kV系统工频过电压一般不应超过下列哪一数值?依据是什么?

A.189.14kV

B.203.69kV

C.327.6kV

D.352.8kV

题型:单项选择题

试述风力发电机组机械系统组成。附属装置的驱动方式有哪些?

题型:单项选择题

对映异构体()

A.评价药物亲脂性和亲水性

B.药效受物理化学性质影响

C.作用依赖于药物特异性化学结构

D.理化性质基本相似,仅仅是旋光性有所差别

E.药物与受体相互作用时,与受体互补的药物构象

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