GPRS理论最大速率可以达到171.2kb/s，请从下列解释中选出正确说法：（）A.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项.

小题1:  You probably think you will never be a top student. This is not necessarily so, however. Anyone can become a better scholar if he or she wants to. Here's how :

Plan your time carefully. When planning your work, you should make a list of things that you have to do. After making the list, you should make a schedule of your time. First your time for eating, sleeping, dressing, etc. Then decide on a good, regular time for studying.  小题2: A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time.

Find a good place to study. Look around the house for a good study area. Keep this space , which may be a desk or simply a corner of your room, free of everything but study materials. No games, radios, or television! When you sit down to work, concentrate on the subject!

Make good use of your time in class.  小题3:. Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

Study regularly. When you get home from class, go over your notes. Review the important points that your teacher is going to discuss the next day, read that material.  小题4: If you do these things regularly, the material will become more meaningful, and you will remember it longer.

Develop a good attitude about tests. The purpose of a test is to show what you have learned about a subject. They help make your new knowledge. The world won’t end if you don’t pass a test, so don’t be over worried.

小题5: You will probably discover many others after you have tried these.

There are other methods that might help you with your study.

Don’t forget to set aside enough time for entertainment

Take advantage of class time to listen to everything the teacher says.

No one can become a top student unless he or she works hard.

Maybe you are an average student.

Make full use of class time to take notes of what the teacher says in class.

This will help you understand the next class.

石膏属于（）

A．硫化物类矿物

B．硫酸盐类矿物

C．碳酸盐类矿物

D．氧化物类矿物

E．卤化物类矿物

直流喷燃器的布置有几种？

下列各项中不属于出库准备内容的是（）。

A、加强出库前的联系

B、货位翻垛

C、做好挑选整理工作

D、做好人力、机具设备、场地准备

资本结构决策会影响融资比例，这些融资来源于：

A．短期负债和长期负债。
B．负债和权益。
C．短期资产和长期资产。
D．留存收益和普通股。