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【单选题】
关于万用表使用方法的描述,( )是错误的A.
模拟式万用表电阻量程的选择,最好使指针处在标度尺的三分之二以上的位置
B.
对于模拟式万用表,必须先调准指针的机械零点
C.
使用万能表现必须仔细阅读使用说明书,了解转换开关的功能
D.
使用万能表时必须正确选择参数档和量程档
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举一反三
【单选题】由集成运放A1、A2等元器件组成的反馈放大电路如图所示。设A1、A2均为理想运放。电阻R 2 阻值增加,则级间负反馈的反馈深度将________;
A.
增大,
B.
减小,
C.
不变
【简答题】下列各项中，属于事业单位财务报表构成内容的有( )。 A.会计报表附注 B.资产负债表 C.收入支出表或收入费用表 D.财政补助收入支出表
【简答题】本课程有多少学时?
【单选题】You are having a business lunch when your phone rings. It is an important phone call that you have been waiting for days. So the polite way to handle this situation is _______.
A.
take the call at the table and try to be quiet so you won’t disturb the other diners during the call
B.
turn your phone off completely and collect your voice mail messages afterward
C.
tell your associates at lunch that you’re expecting an important call, put your phone on vibrate mode and when the call does come, excuse yourself, leave the table and go to a place where no one can hear you. When you return to the table, thank your guest allowing you to take the call and don’t apologize or talk about the nature of the call.
【单选题】由集成运放A 1 、A 2 等元器件组成的反馈放大电路如图所示。设A 1 、A 2 均为理想运放。试分析电阻R 5 阻值增大,则级间负反馈的反馈深度将_________________;
A.
增大,
B.
减小,
C.
不变
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