微处理器是由（）和控制器两大部分组成
A、存储器
B、运算器
C、放大器
D、I/O接口
参考答案：B
________ a difficult situation, so you should send a message to him and give some advice to him .
A．As he is in
B．He is in
C．Being in
D．He being in
我国现阶段的安全生产管理方针是什么？
