对隔膜上有积水的互感器，应对其本体和（）进行有关试验，试验不合格的互感器应退出运行。
参考答案：绝缘油
语句“printf("a\bhow\'are\'y\\\bou\n");”的输出结果是( )。
A) a\bhow\'are\'y\\bou B) a\bhow\'are\'y\bouC) how'are'you D) ahow'are'y\bou
I was surprised to see______at the concert.
A．those number of people
B．that amount of people
C．that number of people
D．those amount of people
