衡量固体燃料的主要质量指标是：（）、挥发分、灰分。

患者，男性，40岁，下腹外伤，考虑为膀胱破裂，简单有效的检查方法是（）。

A.耻骨上膀胱穿刺

B.下腹部X线平片

C.膀胱造影

D.膀胱注水试验

E.腹穿

具有大专学历，取得高级保安员职业资格证书后，从事本保安工作4年以上，可以申报保安师。

根据下面短文内容，在短文的空格处填入一个恰当的词，使短文内容完整、通顺。每空一词，含缩略词。

Everyone wants to be happy. But life isn’t like our imagination. In fact, everyone   小题1:_    sometimes. How do you deal with your worries? Whether your worries are big or    小题2:, you can take these three steps to deal with them:

1. Try to find out what you’re worried about.

Sometimes, you will know what you’re worried about. Other times, you might not. Try to find it out first; if you    小题3: , you can ask for help.

2. Think of ways to make it better.

There is always something you can do to help you feel   小题4: worried. Sitting there worrying is no fun and it will not solve your    小题5: .

If your worry is a fight you had with a    小题6:   , you might write down all the things you could do: write a note to him or her, invite him or her to a basketball game, say    小题7:   to him or her, etc. Once (一旦) you have a list of things you could do, you can choose the one that gets your friend back.

3. Ask for help.

When you’re worried, it can help to find someone to talk to. You can ask   小题8:   parents, friends or teachers for help.

Perthes试验

企业物流外包之后，（）参与第三方物流的运作过程中来。

A.不需要

B.需要

C.完全没必要

D.绝大数情况下不需要