成分最复杂的中间纤维蛋白是()A、角蛋白 B、波形纤维蛋白 C、结蛋白 D、胶质纤维

题型:单项选择题

问题:

成分最复杂的中间纤维蛋白是()

A、角蛋白

B、波形纤维蛋白

C、结蛋白

D、胶质纤维酸性蛋白

考点:生物学细胞生物学细胞生物学题库
题型:单项选择题

— _____?

— Yes, please. I want to buy some CDs for my son. [ ]

A. How do you do

B. What's wrong with you

C. Can I help you

D. Is that Mary speaking

题型:单项选择题
根据对话内容,从方框中选择5 个恰当的句子完成对话,使对话完整、通顺,并将所选句子前的字母代号填写在答题卡上相应的题号后。
A. What about my idea?
B. If you don’t , I think you’ll be sorry.
C. That’s a good idea .
D. But it’s cold there now.
E. My mother took me to go there last year.
F. That sounds wonderful.
G. What place are you going ?
A: Hi , Cathy? Are you traveling to South China ?
B: No.     小题1:  
A: Oh , I see . Where are you going on vacation?
B: North China.
A: I hear that’s a good place for traveling .
B: Yes , I think so .
A:  小题2: 
B: Hmm , Mount Changbai.  小题3:  
A: That’s a good place . It’s autumn here now .I suggest you’d better take more clothes .
B: Why ? It’s cool here .I don’t agree with you.
A:小题4: 
B: I’m not afraid of cold .
A:  小题5:  
B: Really ?
A: Yes , I had ever a bad cold there . I know it’s very cold in this season .www-2-1-cnjy-com
B: OK ,I should take some more winter clothes.
题型:单项选择题

中药注射剂浓配前的精制工序应当至少在()洁净区内完成。

A.A级

B.B级

C.C级

D.D级

题型:单项选择题

有以下程序段typedef struct node{int data;struct node * next;} * NODE;NODE p;以下叙述中正确的是【 】。

A.p是指向structnode结构变量的指针的指针

B.NODEp;语句出错

C.p是指向structnode结构变量的指针

D.p是structnode结构变量

题型:单项选择题

如图所示,用绝缘细线拴一个带负电的小球,让它在竖直向下的匀强电场中绕O点做竖直平面内的圆周运动,两点分别是圆周的最高点和最低点,则下列说法中错误的是(  )

A.小球有可能做匀速圆周运动,也有可能做变速圆周运动

B.小球在运动中机械能不守恒

C.小球经过点时,电势能最小

D.小球经过点时,机械能最大

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