试列举出声发射技术的主要应用方面。

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问题:

试列举出声发射技术的主要应用方面。

考点:生物学海洋生物学海洋生物学题库
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“When can I get a cell phone?” The answer is when your parents think you need one, though many kids seem to be getting them around age 12 or 13. Some younger kids may have them because their parents see it as a matter of safety and convenience. For example, a kid can call mom and dad when sports practice is over. And a cell phone can give kids almost instant access(快捷通道) to their parents if something goes wrong or they need help. It can give parents quick access to their kids so they can check on them and make sure they’re OK.

If you do get a cell phone, make some rules with your parents, such as how many minutes you’re allowed to spend on the phone, when you can use your phone, when the phone must be turned off, and what you will do if someone calls you too often, and so on.

You’ll also have to learn to take care of the phone in your life. Keep it charged(充电) and store it in the safe place so it doesn’t get lost. And whatever you do, don’t use it in the bathroom. I know someone who dropped her phone in the toilet! 

小题1:Parents buy cell phones for their kids because ___________.

A.they think it is necessary

B.they think their kids are old enough

C.they have asked the author for advice

D.they want to follow their kids wherever they are.小题2:The author of the passage ___________.

A.wants to describe how children use cell phones

B.knows nothing about when children can have a cell phone

C.may have done a survey on kids using cell phones

D.has been a teacher for many years小题3:Which of the following is true?

A.It is too young for kids of 12 or 13 to get a cell phone.

B.A cell phone is useful for kids and their parents.

C.The author is against the idea of kids to have cell phones.

D.Most kids are considering having cell phones.小题4:Who is the passage most probably written by?

A.Parents who have bought phones for their kids.

B.Someone who does cell phone business.

C.A teacher who cares most about school safety.

D.Someone who works for children’s education.小题5: Which might not be a rule for kids with a cell phone?

A.Keep it on all the time.

B.Make a call if something goes wrong.

C.Don’t use it in the bathroom.

D.Take care not to lose it.

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不属于结肠镜检查并发症的是()

A.腹胀

B.肠出血

C.肠穿孔

D.肠系膜撕裂

E.腹膜后气肿

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QRS-T波群消失,代之形态不同、大小各异、极不整齐的波形()

A.心室颤动

B.心室扑动

C.心房扑动

D.心房颤动

E.尖端扭转型室速

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糖皮质激素治疗过敏性支气管哮喘的主要作用机制是:

A.抑制抗原-抗体反应引起的组织损害与炎症过程

B.干扰补体参与免疫反应

C.抑制人体内抗体生成

D.使细胞内cAMP含量明显升高

E.直接扩张支气管平滑肌

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基金产品的风险等级一般不包括( )。

A.高风险等级
B.中风险等级
C.低风险等级
D.无风险等级

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