如图所示,静止在硬纸板上的生鸡蛋受到重力和力;迅速击打硬纸板,板上的鸡蛋不随纸板

题型:填空题

问题:

如图所示,静止在硬纸板上的生鸡蛋受到重力和   力;迅速击打硬纸板,板上的鸡蛋不随纸板一起飞出的原因是鸡蛋具有   。鸡蛋落入杯中后,水对杯底的压强将 (填“变大”、“不 变” 或“变小”)。

考点:牛顿第一定律
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校验系数是评定结构工作状况的主要依据。( )

题型:填空题
已知sinαcosα=
3
10
,α∈(
4
2
),则cosα-sinα的值为______.
题型:填空题
Mr. Glen is a millionaire. Years ago, after returning from abroad to his motherland, he     his company. Speaking of success, Glen often tells us a story about his extra expensive “school” fee. He always     his success to it.
At that time, Glen, who already got a Ph.D. degree,      to return home, starting a company. Before leaving, he bought a Rolex watch with the     made through years. At the airport he had to accept the      customs check. The watch on his wrist was also demanded to be  taken down for    . Glen knew that carrying such goods out had to pay the tax, and he worried about paying     for his watch. So while checked, he told a lie that his watch was a      fake(假货). When he was     of his “smarts”, immediately, in the presence of Glen, the officers hit the watch, which    nearly 100,000, into pieces     hearing Glen’s words. Glen was   . Before he understood why, he was taken to the office to be examined    . For many times of entry-exit    he knew that only those people in the “blacklist” would “enjoy” this special treatment. The officers looked over everything carefully, and     him no matter what time of entry and exit he must accept the check and if       reusing and carrying fake goods, he would be     by law! Suddenly, his face turned red, and he had nothing in mind after boarding the plane for long.
After that, he often told the story to his family and his employees. He said that this made a deep    on him, because the additional high “school” fee that he had ever paid made him realize the value of     , which he would remember as the     of his success forever.
小题1:
A.went up B.set upC.took upD.picked up
小题2:
A.owes B.mentions C.bringsD.honors
小题3:
A.objected B.refused C.decided D.asked
小题4:
A.books B.things C.pounds D.savings
小题5:
A.ordinaryB.regular C.routineD.common
小题6:
A.inspectionB.lookC.testD.experiment
小题7:
A.itB.one C.them D.these
小题8:
A.carelessB.priceless C.hopelessD.worthless
小题9:
A.afraid B.ashamedC.proudD.hard
小题10:
A.spentB.paidC.cost D.took
小题11:
A.at B.onC.inD.by
小题12:
A.amazed B.delightedC.disappointedD.satisfied
小题13:
A.strictlyB.quietly C.quicklyD.curiously
小题14:
A.conditions B.chancesC.experimentsD.experiences
小题15:
A.stoppedB.warnedC.urgedD.hoped
小题16:
A.found out B.came outC.sent outD.set out
小题17:
A.hit B.chargedC.praised D.blamed
小题18:
A.expressionB.ideaC.thoughtD.impression
小题19:
A.liesB.honesty C.goods D.bravery
小题20:
A.choiceB.lessonC.secretD.belief
题型:填空题

龋病二级预防包括()

A.修复牙列缺损

B.治疗根尖周病的牙

C.筛选高危人群并进行防护

D.早期充填釉质龋

E.不充填老年牙骨质龋

题型:填空题

“一涨一退山溪水,一反一复小人心”包含着()推理

A、易位推理

B、类比推理

C、连锁推理

D、因果联系

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