如图所示，理想变压器原、副线圈的匝数比n1:n2=1:3，次级回路中

搜题请搜索小程序“爱下问搜题”

问题选择题

如图所示，理想变压器原、副线圈的匝数比n₁:n₂=1:3，次级回路中联入三个均标有“36V，40W”的灯泡, 且均正常发光，那么, 标有“36V、40W”的灯泡A （）

A．也正常发光

B．将被烧毁

C．比另三个灯暗

D．无法确定

答案

答案：A

本题考查理想变压器。由题意知副线圈电压,由变压器原理，，原线圈电压，所以灯泡A两端的电压也是36V，A也可以正常发光，A对BCD错；选A。

填空题

首字母填空。

Where there is a will (意志), there is a way. The secret of s 1 is not much money but a strong will.

In other words, a man can't w 2 without a strong will. It is quite clear that there is n 3 difficult in the

world. If a person makes up his mind to do it, he will certainly r 4 his purpose. The following are the

d_ 5 that a student should remember: we s 6 care about our parents; we have to study as hard as

p_ 7 ;we must be honest and keep our words as w 8 . Each of us should receive good e 9 . Our

parents send us to school to let us get k 10 and wish us to be a hard-working and successful person in

the future. So when we fail, don't lose heart. Keep on working t 11 we succeed. Make sure nothing

could prevent you from t_12_

单项选择题 A型题

颜面疔初期内治法的法则为（）

A.清暑解毒

B.清热化湿

C.祛风清热

D.清热解毒

E.清热泻火