商品码垛的基本要求是（）。A．合理 B．牢固 C．定量 D．节省

Speaking a foreign language is most people want. Every year many  1.    

million of people start learning one. Some people try at home with books 2.  

and records or tapes; some use radios and TV programmes,the others   3.  

go to evening classes. If they use the language only 2 and 3 times a week, 4.  

learning them will take a long time, like learning a foreign language  5.   

at school . A few people try to learn a language fast by studying 6 or more  6.  

hours a day. It is clearly easier to learn the language in the country that it is  7.  

spoken .However, most people can’t afford this and it is necessary for   8.  

many.Whether the language is learnt quickly or slowly, it is a hard work. Good 9.   

books and machines will help, and they can’t do the student’s work for him. 10. 

人最宝贵的是__________，法律保护公民的_________不受侵害。

转炉煤气的密度是（）Kg/Nm³。

子宫峡部是（）

A、子宫颈 * * 部

B、子宫颈 * * 上部

C、子宫颈管最狭窄部分

D、子宫颈与子宫体之间最狭窄部分

E、子宫体最狭窄部分

驾驶装备ABS系统的汽车，（）是不正确的。

A.紧急制动时踩住制动踏板不放松

B.与前车保持足够的安全距离

C.事先阅读驾驶员手册，理解安装ABS后的各种操作说明

D.私自拆换ABS系统的电控单元