()用于开式滑动轴承及滚动轴承。 A.圆柱形辊颈 B.圆锥形辊颈 C.梅花轴头 D.

题型:单项选择题

问题:

()用于开式滑动轴承及滚动轴承。

A.圆柱形辊颈

B.圆锥形辊颈

C.梅花轴头

D.扁头轴头

考点:钢铁从业人员知识竞赛钢铁从业人员知识竞赛题库
题型:单项选择题

阅读短文,然后答题  

       Look at this. What’s this in English, do you know? Ah, it’s a photo. Who’s that in the photo?

It’s Li Yan. Li Yan is my good friend. She is a beautiful girl. Who’s that? The boy in black? It’s Jim. He is an English boy. He is very cool. He is my friend, too. We are all in the same school. I like Jim and

Li Yan.   

根据短文内容选择正确答案。

1. What is t his? It’s ________.

A. a school    

B. a friend      

C. a photo      

D. an English friend

2. Li Yan is ________.

A. a good boy                  

B. a cool boy        

C. a beautiful girl                

D. an English girl

3. What color is Jim in? ________.

A. Red        

B. Yellow      

C. Orange      

D. Black

4. Who’s English? ________.

A. I          

B. Jim          

C. Li Yan      

D. Jim and Li Yan

5. Who are in the same school? ________.

A. Jim and Li Yan                

B. Jim and I          

C. Li Yan and I                  

D. Jim, Li Yan and I

题型:单项选择题

劳动者的基本权利不包括()。

A.完成劳动任务

B.提高职业技能

C.休息、休假的权利

D.接受技能培训的权利

E.取得劳动报酬的权利

题型:单项选择题

洗衣时,下列哪种洗涤用品最环保()。

A、洗衣粉

B、洗衣液

C、肥皂

题型:单项选择题

墩台身混凝土浇筑过程中要注意检查混凝土()不得超标

A.下落高度

B.浇筑速度

C.浇筑层厚

D.强度

题型:单项选择题

对公路造成较大损害的车辆,应遵守什么样的规定?

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