位错是一种（）。A.线缺陷 B.点缺陷 C.面缺陷 D.不确定

关于中成药中含有化学药成分

抗感灵片含

A．对乙酰氨基酚、氯苯那敏、维生素C
B．对乙酰氨基酚、氯苯那敏、咖啡因
C．阿司匹林、氯苯那敏
D．对乙酰氨基酚
E．麻黄碱、碳酸钙

鉴别肾性高血压和原发性高血压的要点是______

A．血压高低

B．有无血尿

C．有无肾损害

D．有无左心室增大

E．尿改变和高血压发病的先后

单词拼写。

1. This is my ________ (八) birthday.

2. Thomas Edison was a great American ________ (发明).

3. We can get a lot of ________ (信息) from the Internet.

4. It is said that the population may be seven ________ (十亿) by the year 2010.

5. Everyone went to the cinema ________ (除……之外) Li Ming.

6. Mike enjoyed ________ (he) very much at the party.

7. We'll have a ________ (discuss) at two this afternoon.

8. The boy was ________ (excite) about playing football.

9. My mother always keeps me ________ (practise) spoken English in the morning.

10. The population in China is ________ (large) than that in India.

以下不能正确计算代数式

sin²(

)值的C语言表达式是______。

A．1/3*sin(1/2)*sin(1/2)

B．sin(0.5)*sin(0.5)/3

C．pow(sin(0.5), 2)/3

D．1/3.0*pow(sin(1.0/2), 2)

分析测定中的偶然误差，就统计规律来讲，其（）。

A.数值固定不变

B.有重复性

C.大误差出现的几率小，小误差出现的几率大

D.正误差出现的几率大于负误差

E.具有单向性