腐蚀按其作用机理的不同，可分成：化学腐蚀、电化学腐蚀、物理腐蚀。
参考答案：对
有效心肺复苏(CPR)的标准中不包括以下哪一项
A．心跳恢复
B．瞳孔变小
C．皮肤颜色红润
D．摸到大动脉搏动
E．收缩压回升至120mmHg以上
句型转换。根据上句完成下句，且使其上下两句意思相同。（10分）
小题1:Excuse me, what’s the time?
Excuse me, _____ ____ is it?
小题2:Please give her this book.
Please give this book ____ ____.
小题3:Why don’t you have an apple?
Why ____ ____ an apple?
小题4:She wants some new books.
She ___ ___ some new books.
小题5:How about a glass of tea?
____ ____ a glass of tea?
