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单选题 在图1中
,
,
, 
可忽略,若使
,则
应为( ) 
A. 
B. 
C. 
学科：默认课程
时间：2026-04-08 09:30:26
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题目1单选题
在图1中<img src="https://tihai-oss-cloud.itihey.com/img/9fb634cec0783fe2efd97a96724132e9.png">,<img src="https://tihai-oss-cloud.itihey.com/img/4777a4f77193ae77344773595f979b76.png">,<img src="https://tihai-oss-cloud.itihey.com/img/1df501079f8a9609f0d84bea46c6bb7f.png">, <img src="https://tihai-oss-cloud.itihey.com/img/dbff93fdbee62a70f9c98a85485cbd3e.png">可忽略,若使<img src="https://tihai-oss-cloud.itihey.com/img/328e91e3ca21f4a656574441c28ed737.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/da4cc2d64b545e8e6018944a2e46bedc.png">应为( ) <img src="https://tihai-oss-cloud.itihey.com/img/e4443f8d5a5b588052f226a1cdae4fcc.png">A. <img src="https://tihai-oss-cloud.itihey.com/img/2afa4e91fd067720ec01812c46786c0d.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/d6c15a920feb8ff190637c66e9d8cd69.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/581c868556d817ca88b294e20c514fc8.png">
题目2单选题
差分放大电路能够放大( )信号A. 共模B. 差模C. 比较D. 交流
题目3单选题
工作在放大状态的晶体管,各极的电位应满足( )A. 发射结正偏,集电结反偏B. 发射结反偏,集电结正偏C. 发射结、集电结均反偏D. 发射结、集电结均正偏
题目4单选题
无输出变压器(OTL)互补对称功率放大电路,输出耦合电容CL 的主要作用是( )<img src="https://tihai-oss-cloud.itihey.com/img/ca90ece9c55afaf521194c4cf61d692c.webp">A. 隔直流B. 改善频率特性C. 输入信号负半周起直流电源作用D. 耦合作用
题目5单选题
为了消除乙类互补功率放大器输出波形的( )失真,而采用甲乙类互补功率放大器A. 饱和B. 截止C. 交越D. 不确定
题目6单选题
p rify:净化A. oB. aC. uD. i
题目7单选题
h mper:阻碍;妨碍A. eB. uC. oD. a
题目8单选题
If you believe in yourself and are determined to succeed, no failure can your confidenceA. muscleB. correctC. corrodeD. scar
题目9单选题
It is clear that music education should emphasize the human, social, and values that are inherent in musicA. estheticB. prefaceC. illuminateD. bruise
题目10单选题
A of spectators stood up and cheered enthusiastically as our national team entered the stadiumA. fractureB. regimentC. capsuleD. radiantly
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