It’s from my parents _______ I learned a lot about life.
A. who
B. that
C. whom
D. which
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It's my parents ______ teach me a lot about life.
A. who
B. whom
C. that
D. which
Little _____ that we were watching his every move, so he seemed to be going his own way in this business.
A. he realized
B. he didn’t realize
C. didn’t he realize
D. did he realize
非线性电阻分类正确的是( )。① 流控型电阻② 压控型电阻③ 单调型电阻
A. ①②③
B. ①②
C. ①③
D. ②③
非线性电容分类正确的是( )。①电压控制型②电荷控制型③单调型
A. ①②③
B. ①②
C. ①③
D. ②③
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