微丸的粒径为（）。

下面文章中有4个段落需要添加小标题，文章需要添加总标题。请从以下选项（A、B、C、 D、E和F）中选出符合意思的标题，并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。

A. Keep Your Voice Low All the Time

B. Put Yourself in the Boss’s Position

C. Propose Your Solution

D. Don’t Go in When You Are Angry

E. Make the Issue Clear

F. How to Argue with Your Boss

小题1:_______________________

Before you argue with your boss, check with the boss’s secretary to determine his mood. If he ate nails for breakfast, it is not a good idea to ask him for something. Even without the boss’s secretary, there are keys to timing: don’t approach the boss when he’s on deadline; don’t go in right before lunch, when he is apt to be distracted and rushed; don’t go in just before or after he has taken a vacation.

小题2:_____________________

If you’re mad, that will only make your boss mad. Calm down first. And don’t let a particular concern open the floodgates for all your accumulated frustration. The boss will feel that you think negatively about the company and it is hopeless trying to change your mind. Then, maybe he will dismiss you.

小题3:_____________________

Terrible disputes can result when neither the employer nor the employee knows what is the problem the other wants to discuss. Sometimes the fight will go away when the issues are made clear. The employee has to get his point across clearly in order to make the boss understand it.

小题4:_____________________

Your boss has enough on his mind without your adding more. If you can’t put forward an immediate solution, at least suggest how to approach the problem. People who frequently present problems without solutions to their boss may soon find they can’t get past the secretary.

小题5:_____________________

To deal effectively with a boss, it’s important to consider his goals and pressures. If you can put yourself in the position of being a partner to the boss, then he will be naturally more inclined to work with you to achieve your goals.

空中加油机加油过程中，加油机、受油机沿同一水平方向以相同的速度飞行，以加油机为参照物，受油机是______的；以______为参照物，加油机是运动的．

内能是系统的（），是一种状态参量。

A、个性

B、特性

C、性能

D、属性

普通话中读轻声的有哪些成分？

与一个投影面平行，一定与其他两个投影面垂直，这样的平面称为投影面的平行面，具体又可分为（）；（）；（）。