黏性团块,流动性小() A.湿砂期 B.粥样期 C.胶黏期 D.面团期 E.橡皮期

题型:单项选择题 B1型题

问题:

黏性团块,流动性小()

A.湿砂期

B.粥样期

C.胶黏期

D.面团期

E.橡皮期

考点:口腔执业助理医师第二单元综合练习第二单元综合练习题库
题型:单项选择题 B1型题

关于加速度和速度的关系,下面说法正确的是(  )

A.加速度大,则速度也大

B.速度变化量大,加速度也越大

C.物体的速度变化越快,则加速度越大

D.加速度为0,则速度一定为0

题型:单项选择题 B1型题

阅读理解。

     As a child, I was really afraid of the dark and of getting lost. These fears were very real and caused me

some uncomfortable moments.

     Maybe it was the strange way things looked and sounded in my own room at night that scared me so

much. There was never complete darkness, but always a streetlight or passing car lights, which made clothes

on the back of a chair take on the shape of a wild animal. Out of the corner of my eye, I saw the curtains (窗

帘) seem to move when there was no wind. A very low sound in the floor would seem a hundred times louder

 than in the day. My imagination (想象) would run wild, and my heart would beat fast. I would lie very still so

that the"enemy(敌人)" would not discover me.

     Another of my childhood fears was that I would get lost, especially on the way home from school. Every

morning I got on the school bus right near my home. That was no problem. After school, though, when all the

buses were lined up along the street, I was afraid that I would get in the wrong one and be taken to some other

strange places. On school or family trips to a park or a museum, I wouldn't let the leaders out of my sight.

     Perhaps one of the worst fears of all I had as a child was that of not being liked or accepted by others.

Being popular was so important to me then, and the fear of not being liked was a serious one.

     One of the processes (过程) growing up is being able to realize and overcome our fears. Understanding the

things that scared us as children helps us achieve greater success later in life.

1. The author had _____ kind(s) of fears when she was a child.

A. one

B. two

C. three

D. none

2. _____ would scare the author at night.

A. Streetlight and car lights

B. Wild animals and enemies

C. Moving curtains and wind

D. Strange sights and sounds

3. When she went to some other places, she would _____.

A. walk away without others

B. take a bus by herself

C. follow others closely

D. make sure not to take a wrong bus

4. Which of the following would be possibly true when she was a child?

A. She was usually popular among people.

B. She was always the leader of the others.

C. She always' got poor grades.

D. She was not at all liked by others.

5. The underlined word "overcome" means "_____" in Chinese.

A. 接受

B. 忍受

C. 信服

D. 克服

题型:单项选择题 B1型题

(12分)如图所示为某种电子秤的原理示意图,AB为一均匀的滑线电阻,阻值为R,长度为L,两边分别有P1、P2两个滑动头。P1可在竖直绝缘光滑的固定杆MN上保持水平状态而上下自由滑动,弹簧处于原长时,P1刚好指着A端,P1与托盘固定相连,若P1、P2间出现电压时,该电压经过放大,通过信号转换后在显示屏上将显示物体重力的大小。已知弹簧的劲度系数为k,托盘自身质量为m0,电源电动势为E,内阻不计,当地的重力加速度为g。求;

(1)托盘上未放物体时,在托盘自身重力作用下,P1离A的距离x1

(2)托盘上放有质量为m的物体时,P1离A的距离x2

(3)在托盘上未放物体时通常先校准零点,其方法是:调节P2,使P2离A点的距离也为x1,从而使P1、P2间的电压为零。校准零点后,将物体m放在托盘上,试推导出物体质量m与P1、P2间的电压U之间的函数关系式。

题型:单项选择题 B1型题

按《建筑地基处理技术规范》(JGJ79-2002)规定,在经过加固处理的软土地基建造受较大水平荷载的建筑物时,应进行( )。

A.地基稳定性验算

B.地基变形验算

C.地基渗透性验算

D.地基承载力满足时不再进行验算

题型:单项选择题 B1型题

有效控制造价应体现的原则有( )。

A.以施主阶段为重点的建设全过程造价控制

B.以设计阶段为重点的建设全过程造价控制

C.技术与经济相结合是控制工程造价有效的手段

D.主动控制,以取得令人满意的结果

E.办理竣工结算,顺利收到工程尾款

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