银在银汞合金中的作用下列哪一条是错误的()
A.易与汞结合
B.是银汞合金的主要成分
C.可使银汞合金体积膨胀
D.可增加银汞合金的流动性
E.都不正确
参考答案:D
I really don’t know _________ I had my money stolen.
A.when was it that
B.that it was when
C.where it was that
D.it was where that
应当如何合理加油来消除泡沫?