外照射防护的基本原则有.（）。A.时间 B.距离 C.屏蔽 D.防护

临床上环杓关节脱位的诊断要点是（）

A.声门闭合时有间隙

B.声带粘膜充血、肿胀

C.一侧声带固定不动或受限

D.杓区粘膜肿胀，有触痛

E.声带中后1/3处息样肿物

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。选项中由两项为多余选项。

Are you truly happy? Do you ever know what it means to be happy and what it takes to achieve happiness?小题1:The following are a few tips that I follow to create happiness in my life.

lMake a plan for achieving goals that you believe will make you happy. Your moods will very likely increase if you are going after something you value.

lSurround yourself with happy people. It is easy to begin to think negatively(消极地) when you are surrounded by people who think that way.小题2:

lWhen something goes wrong, try to figure out a solution instead of being absorbed in self pity. Truly happy people don’t allow setbacks(挫折) to affect their mood because they know that with a little thought they can turn the things back to their favor.

l小题3:These few minutes will give you the opportunity to focus on the positive things in your life and will lead you to continuous happiness.

l小题4:Whether you treat yourself to lunch, take a long, relaxing bath or simply spend a few extra minutes on your appearance, you will be subconsciously(下意识地) putting yourself in a better mood.

lFinding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.

lKeeping healthy is another way to achieve happiness. 小题5:

A．What makes one person happy may be very different from what makes someone else happy.

B．On the contrary, if you are around people who are happy， their emotional state will be easily passed to you.

C．Being overweight or not eating foods containing nutrition have a negative effect on your mood.

D．These are important questions for anyone who is seeking happiness to ask themselves.E.Spend a few minutes each day thinking about the things that make you happy.

F.There are some tips in life that lead to happiness.

G.It’s also important to take some time each day to do something nice for yourself.

金属基复合材料的成形加工技术有哪些？

GDP是本国公民与外国公民在本国内所生产的最终产品和劳务的市场价值总和，在计算产品价值时使用的价格为( )。

A．年初价格

B．年末价格

C．年平均价格

D．现期价格

酱油种曲制作时，会在原料中加入适量（0.5%-1%）经过消毒灭菌的草木灰，其作用是什么？