试题与答案

防水施工时温度不宜低于10℃。()

题型:判断题

题目:

防水施工时温度不宜低于10℃。()

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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A female client has just been diagnosed with condylomata acuminata (genital warts). What information is appropriate to tell this client ?()

A.This condition puts her at a higher risk for cervical cancer; therefore, she should have a Papanicolaou (Pap) test annually.

B.The most common treatment is metronidazole (Flagyl), which should eradicate the problem within 7 to 10 days.

C.The potential for transmission to her sexual partner will be eliminated if condoms are used every time they have sexual intercourse.

D.The human papillomavirus (HPV), which causes condylomata aeuminata, can't be transmitted during oral sex.

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题型:实验题

两辆相同的小车并排放在光滑水平桌面上,小车前端系上细线,线的另一端跨过定滑轮各挂一个小盘,盘里分别放有不同质量的砝码,如图(a)。小车所受的水平拉力F的大小可以认为等于砝码(包括砝码盘)所受的重力大小。小车后端也系有细线,用一只夹子夹住两根细线,如图(b),控制两辆小车同时开始运动和结束运动。

由于两小车的初速度都是零,运动时间又相同,由,即x∝a,只要测出两小车的位移x之比,就等于测出了它们的加速度a之比。

实验结果是:

当小车质量相同时,_____________________________;

当小车所受拉力相等时,_____________________________。

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