用3、4、5这3个数字组成两位数乘一位数的乘法，积最大是215．______．（

五．对话填空（每小题1分，满分10分）

M: Can you tell me something about your education?

W: Yes. I’m a g____76___ of Zhengzhou University. I learned business.

M: Did you l____77__ your business course?\

W: Very much, and I’ve done w__78____ in all of them. Here are the results of my examinations.

M: Hm. You were indeed a good student. What about your s___79____ English?

W: I can talk w_____80__ foreigners freely. When I was at college, I often went to the English Corner. We had English teachers from Australia.

M: Hm. We can hire you. We give the employees a s___81____ of 480 dollars a month at the beginning. If you do a good job, you will get a rise in three months’ t____82_______.

W: That’s great. How long should I work every day?

M: Four hours every day and two days o___83_____ in a week.

W: Do you o____84_____ housing to your employees?

M: Not now. My assistant will tell you w______85____ you are interested in.

W: OK. When shall I begin my work?

M: Next week.

患者长期大量使用糖皮质激素时，下列哪种变化正确（）。

A.血中促肾上腺皮质激素减少

B.血中肾上腺皮质激素增加

C.血中TSH增加

D.血中GH减少

E.血中PRL增加

ZK7-6/550型电机车的轨距是（）

A、762

B、600

C、900

简述急性腹膜炎的阳性体征。

机车触头、接触片、连接线应紧固，触头接触不小于宽度的（）其终压力为（），触头相互错位不大于（），触头与接触片烧损修正后余厚不得小于原厚度的（），连接线断丝不得超过（）。