电磁炉给高位水箱上水时应注意什么？
参考答案：
操作人员不得离开，上水完成后关闭好上水阀门。
堆栈最常用于（）。
A．实现数据循环移位
B．实现程序转移
C．保护被中断程序的现场
D．数据的输入输出缓冲存储器
She told me that it was _____ you spoke ill of her behind her back _____ she disliked you.
A．since; that
B．for; that
C．because; that
D．that; why
