下列物质中不属于合金的是( ) A.硬铝 B.钢铁 C.青铜 D.金箔

题型:选择题

问题:

下列物质中不属于合金的是(  )

A.硬铝

B.钢铁

C.青铜

D.金箔

考点:合金
题型:选择题

一个圆锥的底面半径为6㎝,圆锥侧面展开扇形的圆心角为240°,则圆锥的母线长为(   )

A.9㎝

B.12㎝

C.15㎝

D.18㎝

题型:选择题

目前,我国正在倡导转变经济增长方式,构建节约型经济体系。此举的主要目的是(   )

A.节约资源,减轻环境污染

B.构建和谐社会

C.促进经济的高速增长

D.培养民众节俭消费的习惯

题型:选择题

用所给词的适当形式填空。

1. What makes your brother so              (health)?

2. We never feel              (bore) in English class.

3. I'm so hungry that I want to have some              (much) food.

4. Zhou Jielun is famous as a              (sing).

5. A tiger is _______ (danger) than an elephant.

6. It is a              (please) way to have an English test like that.

7. When the teacher asks them questions. Cindy is _______ (nervous) of all.

8. Millie thinks swimming isn't as _______ (interest) as hiking.

9. Peter was              (bad) in the drawing competition.

10. Kitty is              (slim) than any other girl in her class.

题型:选择题

钢材的时效处理

题型:选择题

人民警察要保守国家秘密和警务工作秘密,因此,即使是兄弟单位、兄弟部门之间也应该彼此封锁消息.( )

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