如图所示,两根完全相同的弹簧和一根张紧的细线将甲、乙两物块束缚在光滑水平面上,已

题型:多选题

问题:

如图所示,两根完全相同的弹簧和一根张紧的细线将甲、乙两物块束缚在光滑水平面上,已知甲的质量大于乙的质量.当细线突然断开后,两物块都开始做简谐运动,在运动过程中(  )

A.甲的振幅大于乙的振幅

B.甲的最大加速度小于乙的最大加速度

C.甲的最大速度小于乙的最大速度

D.甲的最大动能大于乙的最大动能

考点:简谐运动的回复力和能量
题型:多选题

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,写在答题纸相应的位置。选项中有两项为多余选项。

How to improve your perseverance(毅力)

If you’re familiar with the story of the hare (野兔) and the tortoise(乌龟), you know that the tortoise proved that perseverance is much more important than speed.      小题1:     , but fewer people have the patience and perseverance of the tortoise. Here are some tips that can help you to improve your perseverance.

●Set goals and write them down.

If you don’t know what you want to accomplish, it’s hard to persevere(坚持) until you do.    小题2:    , instead of making many projects that may upset you

    小题3:   , and cross each step off the list as you complete it.

If you want to master the ability to cook German dishes, you’ll need to read cookbooks, study the recipes(食谱), buy ingredients(食料) and practice making the dishes. Write down all these steps and remove each step as you go.

●Make a list of the rewards related to any project to encourage yourself to persevere.

When you want to lose 40 pounds, it may seem like a difficult goal.      小题4:   . You can lower your blood sugar or fit into your favorite pair of jeans(牛仔裤). Keep those rewards in mind to encourage yourself to stick to your diet and exercise program.

●Imagine your success.

Take time each day to sit back, relax and picture the life you’ll lead once you’ve reached your goal.      小题5:    . Read them over several times a day to encourage yourself to keep going.

A.Like the hare, many people start off strong

B.And you should focus on every step carefully

C.You can’t lose weight only by going on a diet

D.Make a list of the steps needed to reach your goalE. But there are big rewards for doing so

F. Choose one or two goals that are most important to you and work toward those

G. Or you can write out a paragraph or two about how reaching your goal will change your life

题型:多选题

柔韧素质的好坏跟哪些因素有关()

A.关节的解剖结构

B.关节周围软组织的体积大小

C.韧带、肌腱的伸展性

D.皮肤的伸展性

题型:多选题

线路爬行量超过()时,应对轨缝进行调整。

A.15mm

B.18mm

C.20mm

D.25mm

题型:多选题

【案例6】某省HND大桥由中标的CHD公司大桥项目经理部施工,KNS咨询监理公司进行施工监理,全桥380根钻孔灌注桩(采用白云山水泥,初凝时间9h,终凝时间16h)。刚进行到第五根桩施工时,遇到下列事件:

第五根桩从9月14日7:00开始灌注混凝土,15:16因电焊机使用不当导致发电机组故障,使搅拌机及灌注设备被迫停工,CHD公司大桥项目经理部立即组织人员抢修,发电机组于17:08修复,17:13恢复施工,恢复施工后提升导管提不动,经反复转动,上下冲振,至17:32才将导管拔出,就位到预定高度,开始灌注新混凝土,17:42监理工程师到现场视察,19:34灌注完全部混凝土。当导管全部提出孔外清点时,导管总长只有48m,因此,监理工程师同意桩基按48.5m计量,承包人要求按设计桩长55.6m计量。其证据是业主提供的设计图纸(除此外,监理工程师的承包人不能再提供其他证据证明施工的实际桩长)。

问题(1)该桩是否合格,为什么

(2)该事件所反映的施工监理中存在的主要问题及其原因有哪些

(3)桩基础该在什么时候进行计量应按多长给予计量

题型:多选题

PROCESS语句属于()语句。

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