为完全防止颅内深部手术中的体动和呛咳，强直后计数（PTC）应为_爱下问搜题

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问题单项选择题 A1/A2型题

为完全防止颅内深部手术中的体动和呛咳，强直后计数（PTC）应为（）。

A.0

B.1～2

C.3～4

D.4～5

E.5～6

答案

参考答案：A

解析：PTC是强直刺激衰减后的易化，用50Hz强直刺激持续5s后间隔3s再给以单刺激，计算肌颤出现的数目。小鱼际肌对TOF已100%抑制时，横膈仍有活动，刺激气管隆嵴可引起强烈的咳嗽，要完全抑制横隔活动和避免呛咳，应保持PTC为0。

完形填空

In 1985 a France television company sent its reporters to the Paris Metro（地铁）．They took ___21___ to see what passengers would do if they saw someone ___22___ on the platform or trains．The incidents looked ___23___ and they were all done with the help of actors．However, very ___24___ people tried to help, and most passengers ___25___ not to notice．In one of the ___26___, a foreigner was attacked by three men．The attack was on a ___27___ which was quite full, and although the man tried to get ___28___ passengers to help, they all refused．This is not only a French ___29___．A British newspaper reported in 1991 that a professor of Social Psychology in New York had ___30___ his students out to rob their own cars．The students didn’t try to ___31___ what they were doing．About 80 people ___32___ 250 car thefts, and only twelve of them tried to ___33___ the student robbers．In a typical incident, one man stopped, looked, and then put his hands over his ___34___ and shouted “I didn’t see that!” About forty people ___35___ to help the thieves, and two people ___36___ sat down next to the car and ___37___ to buy a camera and a television set a student was ___38___ from the back seat of his own car．The professor ___39___ whether it is a problem of big cities or would be the ___40___ thing as happens anywhere．

单项选择题

升流式异向流斜板（管）沉淀池的设计，应符合下列要求。斜板（管）区底部缓冲层高度（）m。

A.0.5

B.1.0

C.1.5

D.2.0