不属于低型称量瓶常见规格的是()。 A.5mL B.10mL C.15mL D.20

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问题:

不属于低型称量瓶常见规格的是()。

A.5mL

B.10mL

C.15mL

D.20mL

考点:油气田水处理工考试高级油气田水处理工考试高级油气田水处理工考试题库
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How to Calm Your Teen's Nerves before an Exam

Stress is a feeling of physical. mental of emotional strain of tension which disturbs or interferes with normal physiological balance. Stress can be overwhelming for anyone, but it can be especially difficult for a teen that has not yet developed effective coping skills. A major source of teen stress is school exams, and test anxiety is not uncommon. So, how can parents help their teen stay calm before an exam?

Recognize when your teen is under stress.

Teens can feel an immense pressure to do well on exams. For some teens, just the idea of taking the test can bring them into a panic(恐慌).  1 Emotional symptoms include: excessive of uncontrollable drying, aggression or mood swings, and panic attacks.

What should parents do?

--Be involved

Parents need to be involved in their teen's work. What they look for is your presence--to talk, to dry, or simply to sit with them quietly. Communicate openly with your teen.  2_

--Help them get organized

Help your teen think about what she has to study and plan accordingly.  3 

--Give them a nutritious diet

It's important for your teen to eat a healthy, balanced diet during exam times to focus and do her best. if this happens, encourage your teen to eat light meals or sandwiches. A healthy diet. rather than junk food, is best for reducing stress.

--Show a positive attitude

  5 If you panic, blame, or apply to much pressure, your teen will have an undue increase in their stress levels. Make your teen feel accepted and valued for her efforts. Most important, reassure your teens that things will be all right, no matter what the results are.

A.Together ,you and your teen can work out a time-table in which she can study for what she knows will be on the test.

B.A parent's attitude will dictate their teen's emotions.

C.Physical symptoms of stress and anxiety include: lack of sleep, difficulty breathing, loss of appetite of irregular eating

D.Encourage your teen to relaxE. Encourage your teen to express his worries and fears, but don't let them focus on those fears.

F. Your teen may also make negative comments about themselves

G. Exam stress can make some teens lose their appetite

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如图所示,两木块的质量分别为m1和m2,两轻质弹簧A、B的劲度系数分别为k1和k2,若在m1上再放一质量为m0的物体,待整个系统平衡时,m1下降的位移为多少?

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可直接导致意识障碍的心律失常是()

A.室性早搏

B.房性早搏

C.心室颤动

D.右束支阻滞

E.窦性心动过速

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水文大断面起点距测量时,()的往返测量不符值不应超过1/500。

A、地形点

B、固定点

C、转折点

D、两岸始末断面桩之间总距离

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钢材中硫的增加会引起( )。

A.冷脆性
B.热脆性
C.焊接性能提高
D.腐蚀性能提高

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