固体废弃物的主要处置方法有（）
A.回收利用
B.减量化处理
C.稳定和固化
D.填埋
E.直接焚烧
参考答案：A, B, C, D
One of the things we have to do to prevent a pandemic is to make sure people understand and know what they can do to minimize the commotion .
A．command
B．collusion
C．turmoil
D．tutelage
MCU是（）的缩写。
A.Muti control unit
B.Micro Control Unit
C.Main Computational Unit
D.Memory Control Unit
