金刚石、石墨、C60都是由碳元素组成的单质。关于它们的说法正确的是[ ] A、化

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问题:

金刚石、石墨、C60都是由碳元素组成的单质。关于它们的说法正确的是[ ]

A、化学性质相同

B、碳原子的排列方式不同

C、物理性质相同

D、是同一种物质

考点:金刚石、石墨、C60的结构和用途
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在《中国药典》中,“制剂通则”收载在()。

A.目录部分

B.凡例部分

C.正文部分

D.附录部分

E.通则部分

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情景交际。从七个选项中选出符合对话内容的选项填入对话中。有两项多余。(5分)
Lana went to see a new movie in the morning. But she didn’t enjoy it. She’s talking to Jenny about what happened.
Jenny: You look unhappy.      1     
Lana: I watched a movie in the morning.
Jenny: 2       
Lana: No. The movie was great. It was the audience(观众). Some people were late for the movie, some took phone calls during the movie, some made noise while eating snacks and some talked loudly.     3       
Jenny: That’s too bad! People should obey certain rules while watching a movie.
Lana: Yes. The first thing is to keep the theater quiet. We should sit down before the movie begins.    4    We should eat snacks quietly. And we should talk as little as possible.
Jenny: 5      And we should take away our rubbish when we leave.
Lana: I hope everyone should do these things so that we can enjoy the movie better.
Jenny: Me, too.
A. I was annoyed all the time.
B. Who did you go to the movie with?
C. Yes, you are right.
D. How wonderful the movie was!
E. What’s wrong with you?
F. We should turn off our mobile phones.
G. So the movie was boring, wasn’t it?
 
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当通过电话线连接到ISP时,因为电话线路输出信号为哪种信号,计算技术输出信号只能通过调制解调器同电话网连接

A.数字

B.模拟

C.音频

D.模拟数字

题型:选择题

会议记录原稿通常要()。

A.予以销毁

B.统一编号

C.进行复制

D.装订成册

题型:选择题

企业追求的终极目标是产品符合标准。

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