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【简答题】
若高频调谐功率放大器( C 类功放)的输入电压为余弦信号,则其基极电流是( )信号、集电极电流是( )信号、放大器输出电压是( )信号 。
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举一反三
【简答题】公式 的真值表有 (__)种真值指派;
【简答题】Dictation Listen to the third part of a short passage on the shopping attitudes of men and women and write it down word by word. hints: lunatic, triumphant
【简答题】Listen to the third part of the conversation and tell your partner who might have stolen the woman’s briefcase.
【多选题】Listen to the third part of the interview. Which two cultural aspects does Jeff mention? Please choose from the following items. Check the answers later and get the details.
A.
Entertaining
B.
Gift-giving
C.
Hierarchy
D.
Time
E.
Greetings
F.
Dress
【简答题】Listen to the third conversation between a student and a professor.
【多选题】Listen to the third part of the interview. Which two cultural aspects does Jeff mention and what does he say about them?
A.
Entertaining
B.
Gift-giving
C.
Hierarchy
D.
Time
E.
Greetings
F.
Dress
【简答题】公式【图片】的真值表有____种真值指派。
【简答题】Listen to the third part of the conversation and find the benefits of sharing photos online. Fill in the blanks with what you hear. (每空填2个单词)
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