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【简答题】
在多级放大电路中,后级的输人电阻是前级的____,而前级的输出电阻则可视为后级 的_____。多级放大电路中常见的耦合方式有____ 、____ 、____ 三种形式。
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参考答案:
举一反三
【简答题】DNA修复(DNA repair)
【单选题】Section B Question 8 is based on the conversation you have just heard.
A.
Visiting her family in Thailand.
B.
Showing企iends around Phuket.
C.
Swimming around a Thai island.
D.
Lying in the sun on a Thai beach.
【简答题】dna基因(dna gene)
【单选题】Question 8 is based on the conversation you have just heard.
A.
To confirm an urgent appointment.
B.
To collect a package from the woman.
C.
To ask the woman to sign a document.
D.
To arrange the delivery of a package.
【单选题】Question 8 is based on the conversation you have just heard.
A.
He prefers the smaller evening classes.
B.
He has signed up for a day course.
C.
He has to work during the day.
D.
He finds the evening course cheaper.
【多选题】慢性肾功能衰竭时血游离钙降低,是因为
A.
酸中毒
B.
PTH增多
C.
血磷升高
D.
1,25-(OH)2-D3减少
E.
毒性物质使肠吸收钙减少
【简答题】自私DNA(selfish DNA)
【简答题】Ne te mets pas ................ colère ................ une histoire pareille.
【简答题】DNA克隆(DNA cloning)
【单选题】Question 8 is based on the conversation you have just heard .
A.
The security check takes time
B.
He has to check a lot of luggage
C.
His flight is leaving in less than 2 hours
D.
The airport is a long way from the hotel
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