A:______we go to see a film tonight?B:Good idea.
A. Will
B. Shall
C. Where
D. Are
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He had learned more than 5000 English words ______he entered the univerisity at the age of 16.
A. while
B. when
C. but
D. although
Henry looked very much______when he was caught cheating in the math exam.
A. discouraged
B. embarrassed
C. disappointed
D. bewildered
下列属于测控电路的功能是
A. 放大与滤波
B. 调制与解调
C. 细分与辨向
D. 运算与转换
测量电路处理的信号分为
A. 模拟信号
B. 离散信号
C. 采样信号
D. 数字信号