外源性致热原的特点，正确的是（） A.分子量较小 B.其致热原_爱下问搜题

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问题单项选择题 A1型题

外源性致热原的特点，正确的是（）

A.分子量较小

B.其致热原性可被蛋白酶类所破坏

C.能激活血液中的中性粒细胞和单核细胞

D.直接作用于体温调节中枢

E.在体内最终由肝、肾灭活和排泄

答案

参考答案：C

选择题

The computers made by our company sell best, but several years ago no one could have imagined the role in the markets that they _____.

A. were playing
B. were to play
C. have played
D. played

填空题

用英文数字填空。

fifteen eleven fourteen ten twelve

1. 5+9=
2. 100 －               =90
3. 22 －                 =10
4. 7+8=
5. 16 －                 =5