问题 单项选择题

下列不属于为防止事故发生而采用的安全技术措施的是( )

A.隔离
B.限制能量和危险物质
C.疏散和救援
D.消除危险源

答案

参考答案:C

解析: 防止事故发生的安全技术措施是指为了防止事故发生,采取的约束、限制能量或危险物质,防止其意外释放的技术措施。常用的防止事故发生的安全技术措施有消除危险源、限制能量或危险物质、隔离等。具体有:消除危险源;限制能量或危险物质;隔离;故障一安全设计;减少故障和失误。

单项选择题
完形填空

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。选项中有两项多余选项。

Lots people stress out(紧张) about talking in front of the class or getting laughed at if they make a mistake in front of an audience._小题1:_ The “stress hormones” that your body produces at times like these can actually help you focus.

But when worry and stress about performing get to be too much, these hormones give people that “red alert(紧急状态)”---the one that causes you to feel cold or sweaty, or get butterflies in your stomach._小题2:__

Be prepared. __小题3:_ Rehearse(排练) as much as you can and practice in front of others at every opportunity. Most of all, think positively. Tell yourself “I’ll be OK” or “I can do this” even if you are not 100% sure of it.

Look after yourself. Before big performances, it’s easy to let taking care of yourself slip as you spend too much time on rehearsals and practice. __小题4:__ Exercise can also can also help you feel good, and along with sleep and nutrition, is an excellent way of keeping those stress hormones from getting out of control.

Find out what the experts do. You can find books, DVD, and online information about how to give your best when you perform, depending on what type of performance you’re preparing for._小题5:_ Or ask the cast of your school play or your drama or music teacher how they beat stage fright. And if your parents or grandparents ever performed, they may have their own secrets to share.

A.Confidence helps beat stress hormones.

B.The following tips can help you avoid that feeling.

C.You’re less likely to freeze up if you’re well prepared.

D.You can do this whether you’re performing alone or as part of a group.E.Check out stories about Olympic gymnasts or your favorite star to get their tips.

F.Feeling nervous before a performance is part of body’s way of helping you do your best.

G.You’ll look and feel your best if you get enough sleep and eat healthy meals before your performance.