F波的特性不包括() A.所需的阈刺激强度小于M波 B.理论上可在全身任何肌肉引出

题型:单项选择题 A1/A2型题

问题:

F波的特性不包括()

A.所需的阈刺激强度小于M波

B.理论上可在全身任何肌肉引出

C.低强度刺激时F波波幅恒小于M波

D.潜伏期和形状则随着每次刺激的不同而变化

E.所需阈刺激强度大于M波

考点:康复医学治疗技术(师)康复评定基础康复评定基础题库
题型:单项选择题 A1/A2型题

能产生外毒素的志贺菌是()

A.痢疾志贺菌

B.福氏志贺菌

C.鲍氏志贺菌

D.宋内志贺菌

E.以上都不是

题型:单项选择题 A1/A2型题
如图所示为一磁流体发电机示意图,A、B是平行正对的金属板,等离子体(电离的气体,由自由电子和阳离子构成,整体呈电中性)从左侧进入,在t时间内有n个自由电子落在B板上,则关于R中的电流大小及方向判断正确的是(  )

A.I= ,从上向下

B.I= ,从上向下

C.I= ,从下向上

D.I= ,从下向上

题型:单项选择题 A1/A2型题

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。选项中有两项为多余选项。

     A man was driving at 70 miles in a 40-mile-zone, when a police car came behind him with the light on.

1.____

     As the policeman came to him, he said, "Hi, officer, I guess you caught me a little bit over the limit. I was

in a rush to get home, to be with my wife and kids, you know my younger son wasn't feeling too well when

I left home this morning.

     The policeman said, "Well, I guess so," and started writing something in his notebook. 2.____ Afew

moments later, the policeman came to his window and handed him a paper, and returned to his car without

saying a single word. The man started to wonder, how much this ticket was going to be as he began to look

at the paper. 3.____

     "I had a daughter who was killed by a speeding car at the age of six, by a speeding driver like you. He got

a fine, a few months in prison, and was free, free to hug two other daughters. 4.____ I have tried to forgive

that man a thousand times, and I thought I had. Maybe I really did forgive him, but I have to do it again, even

right now. 5.____

     The man was very surprised and could not move for the next few minutes. When finally he did, he drove

slowly, even a few miles under the speed limit, praying for forgiveness.

A. So pray for you, and be careful when you drive again, your daughter is all you have left.

B. I only had one, and now I have to wait I go to heaven before I can hug her again.

C. Right away the man started thinking of excuse to give.

D. He was surprised it was not a ticket as he began to look at.

E. So pray for me, and be careful when you drive again, my son is all I have left.

F. As minutes went by, he hadn't asked for his driver's license.

G. He was surprised it was not a ticket as he began to read.

题型:单项选择题 A1/A2型题

A、B、C、D、E、F均为短周期元素,其原子序数依次增大.已知:A的最外层电子数等于其电子层数;B的最外层电子数是次外层电子数的两倍;D是地壳中含量最高的元素;D和F、A和E分别同主族;E是所有短周期主族元素中原子半径最大的元素.根据以上信息回答下列问题:

(1)B与D形成化合物BD2的结构式为______

(2)A、C、D三元素能形成一种强酸甲,写出单质B与甲的浓溶液反应的化学反应方程式______.

(3)均由A、D、E、F四种元素组成的两种盐,其相对分子质量相差16,写出它们在溶液中相互作用的离子方程式为______;由B、D、E组成的盐溶于水后溶液显碱性,其原因是(用离子方程式表示)______.

(4)C2A4─空气燃料电池是一种碱性燃料电池.电解质溶液是20%~30%的KOH溶液.则燃料电池放电时:正极的电极反应式是______.

(5)已知:2CD2(g) 

 C2D4(g);△H<0.在恒温恒容条件下,将一定量CD2和C2D4的混合气体通入容积为2L的密闭容器中,反应过程中各物质的物质的量浓度c随时间t的变化关系如图所示.

①a、b、c、d四个点中,化学反应处于平衡状态的是______点.

②25min时,增加了______(填物质的化学式)______mol.

③a、b、c、d四个点所表示的反应体系中,气体颜色由深到浅的顺序是______(填字母).

题型:单项选择题 A1/A2型题

根据以下资料计算:2007年我国能源生产总量年平均增长速度为6.5%,能源消费量年平均增长速度为7.8%,电力生产量年平均增长速度为14.5%,电力消费量年平均增长速度为14.4%,国民经济年平均增长速度为11.9%。

2007年能源消费弹性系数为()

A.0.66

B.0.33

C.1.33

D.1.66

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