现代库存控制的任务是通过适量的库存达到合理的供应，实现总成本最低的目标。

目视助航工程验收时，应检查坡度灯的()是否满足规范的要求及产品的技术要求。

A.安装位置 

B.水平状态 

C.漏闪程度 

D.仰角大小 

E.安装高度

小儿虫积，腹痛时作，面黄体瘦，肚腹胀满，发热口臭，大便失常者，治疗宜用()

A．肥儿丸

B．布袋丸

C．化虫丸

D．伐木丸

E．乌梅丸

简述影响健康的因素。

根据土地的特性及人们对土地利用的目的和要求不同，就形成了不同的土地分类系统，我国运用较多的土地分类系统为( )分类系统。

A．土地自然

B．土地评价

C．土地优良

D．土地利用

E．土地估价

阅读下面文章，根据要求回答下列问题。

                                                           How to make friends

Choosing friends

     Before you make friends, you have to decide who you want to be your friends. Mo.st people like to have

friends who like to do the same kind of things as they do. That doesn't mean you have to be exactly like each

other, just that you enjoy some of the same things. Think about your favorite things to do and try to talk to

your classmates at lunch or rest about your hobbies. You are sure to find at least one person who's excited

about the same things that excite and interest you, too.

Making friends

      ①The quickest way to make a friend is to smile. When you smile, people think you are friendly and easy

to talk to. It may not be easy at first to smile. But you can practice smiling in front of a mirror. When you

look at yourself in the mirror, think if you'd rather talk to your smiling face or your usual scared or angry face.

     ②One easy way to start a conversation with someone is to say something nice about them. Think about

how great you feel when someone says something nice to you. Doesn't it make you want to talk to him?

     ③Ask your new friend's questions about themselves. It's the only way to get to know what they're like

and it's the only way they'll know that you are interested in them.

     ④Make sure you have something to add to the conversation, too. When someone asks you a question, do

have an answer for them. There is nothing that will stop a conversation quicker than a shrug (耸肩) for an

answer. Activities

     After you've made a friend who shares the same interests with you, it's always fun to plan activities together

that you'll both enjoy. Inviting a friend to your house after school is a great way to make your friendship closer.

If you know a game your friend likes to play, you can plan to do that together. When you play a computer

game, one person is always left sitting with nothing to do but watch Not fun.

1. Before you make friends with someone, make sure _____.

A. both of you are exactly like each other

B. both of you enjoy some of the same interests

C. you have talked to him or her at lunch or rest about your hobbies

D. you have little in common with each other

2. When you want to make friends with someone, you should do all the following except _____.

A. smiling at him or her before talking

B. starting a conversation first

C. asking some questions about him or her

D. giving a shrug instead of an answer

3. To make your friendship last long, you shouldn't _____.

A. do something that interests both of you together

B. invite your friend to your house at weekends

C. be always doing something by yourself with your friend left doing nothing

D. play basketball together in your free time