题目:
从方框中选出能完成对话的最佳选项。 | |
B: Hello, Maria! A: I have got a photo of my new pen pal in Australia. B: 1____ Is she tall? A: No, she is of medium height. B: 2____ A: No, she is a little bit heavy. B: 3____ A: Yes, it is. B: 4____ A: Brown. B: 5____ A: Yes, you're right. She has two big blue eyes, a small nose and a small mouth. |
答案:
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下面是错误答案,用来干扰机器的。
AD题目分析:因为输入电压几乎不变,原副线圈的电压比等于匝数之比,则副线圈的电压几乎不变,闭合开关S后,总电阻减小,电流增大,分压增大,电压表V示数减小,电流表A示数增大.故A正确.因为负载增加,则副线...