利用各种简单的工具或复杂仪器对设备状态进行的监测称为（）。
参考答案：客观监测
根据句意及首字母提示完成单词
小题1:We went to a summer c______ last year.
小题2:There w______ many trees on the mountains five years ago(以前).
小题3:We are studying hard for e______.
小题4:—He was an English teacher.
—R______? Did he teach you?
小题5:What an a______ classroom! It’s too dirty!
A．assignments
B．information
C．content
D．definition
