问题
单项选择题 A1/A2型题
毫安表指示反映X线故障,错误的为()
A.高压指示灯亮毫安表必有指数
B.高压短路毫安表指针上冲
C.X线产生量大毫安表指示值高
D.毫安表有显示值就一定有X线产生
E.限时不准毫安表指示值正常
答案
参考答案:A
解析:高压初、次级电路断路时,高压继电器工作,高压指示灯亮,但无X线产生,毫安表无读数。
毫安表指示反映X线故障,错误的为()
A.高压指示灯亮毫安表必有指数
B.高压短路毫安表指针上冲
C.X线产生量大毫安表指示值高
D.毫安表有显示值就一定有X线产生
E.限时不准毫安表指示值正常
参考答案:A
解析:高压初、次级电路断路时,高压继电器工作,高压指示灯亮,但无X线产生,毫安表无读数。
完形填空。 | ||||
Market is a place which we get food from. My 1 goes there every day. Two 2 ago, I went with her to a 3 near our home. When we went inside, I saw the place was 4 and a lot of people were doing 5 there. It was very noisy because so many people were speaking 6 . The sellers and the people were very 7 . There were many vegetables, fishes, and a lot of meat there. My mother 8 to buy some of them, but there were too many people. We had to wait for some time 9 we bought all the food we needed. Now everything in the market is much 10 than two years ago. | ||||
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