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【多选题】
如图为二极管的伏安特性曲线,下面关于它的描述,正确的是:( )
A.
二极管的伏安特性曲线和PN结的伏安特性曲线很相似。
B.
二极管的正向特性中，外加正向电压必须要大于PN结的势垒电压，才能形成较大的扩散电流，即形成正向电流，因此，二极管正向特性中有一个开启电压。开启电压的值近似等于PN结的势垒电压。
C.
二极管正向导通后，两端很小的电压变化，能引起两端较大的电流变化。因此，二极管正向导通电压降可近似为一个恒定值，这个值一般比较小，略大于PN结的势垒电压，也即略大于开启电压。
D.
普通二极管只工作在二极管的正向导通和反向截止的特性上，特殊的稳压二极管才工作在二极管的反向击穿的恒压特性上。
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A.
100
B.
80
C.
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D.
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【判断题】如果函数F (x)是连续函数f(x)在区间[a, b]上的一个原函数, 则 .( )
A.
正确
B.
错误
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【单选题】听力原文： One hundred and thirteen million Americans have at least one bank-issued credit card. They give their owners automatic credit in stores, restaurants, and hotels, at home, across the country, and...
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withdraw as much money from the bank as he wishes
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obtain more convenient services than ordinary people do
C.
enjoy greater trust from the storekeeper
D.
cash money where he wishes to
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【单选题】听力原文： One hundred and thirteen million Americans have at least one bank-issued credit card. They give their owners automatic credit in stores, restaurants, and hotels, at home, across the country, and...
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Computers.
B.
Credit cards.
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Local branch banks.
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Restaurants and stores.
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反函数
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A.
劳动资料公共所有
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劳动力个人所有
C.
劳动对象公共所有
D.
所有生产条件公共所有
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【单选题】A bank run occurs when______.
A.
a bank is closed for one or more days
B.
too many depositors attempt to draw out their money at one time
C.
there is not enough money to pay all of its depositors at one time
D.
employees of a bank take their own funds out of the bank
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【单选题】A bank run happens when ______.
A.
a bank is closed for one or more days
B.
too many depositors try to draw out their money at one time
C.
there is not enough money to pay all its depositors at one time
D.
tellers of a bank take their own money from the bank
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相关题目：
【单选题】某企业年生产100万元最终产品,但只销售80万元,则计入GDP的为( )万元
A.
100
B.
80
C.
20
D.
60
查看完整题目与答案
【判断题】如果函数F (x)是连续函数f(x)在区间[a, b]上的一个原函数, 则 .( )
A.
正确
B.
错误
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【单选题】听力原文： One hundred and thirteen million Americans have at least one bank-issued credit card. They give their owners automatic credit in stores, restaurants, and hotels, at home, across the country, and...
A.
withdraw as much money from the bank as he wishes
B.
obtain more convenient services than ordinary people do
C.
enjoy greater trust from the storekeeper
D.
cash money where he wishes to
查看完整题目与答案
【单选题】听力原文： One hundred and thirteen million Americans have at least one bank-issued credit card. They give their owners automatic credit in stores, restaurants, and hotels, at home, across the country, and...
A.
Computers.
B.
Credit cards.
C.
Local branch banks.
D.
Restaurants and stores.
查看完整题目与答案
【简答题】传播学最早诞生于(),传播学的集大成者是()
查看完整题目与答案
【单选题】如果函数f(x)在区间[a,b]上连续,则 是f(x)的
A.
导函数
B.
反函数
C.
原函数
D.
无关函数
查看完整题目与答案
【简答题】In China，the one of original AWB as（ ）submit to Bank by beneficiary．
查看完整题目与答案
【单选题】关于公有制前提下按劳分配这种分配原则的说法不准确的是?
A.
劳动资料公共所有
B.
劳动力个人所有
C.
劳动对象公共所有
D.
所有生产条件公共所有
查看完整题目与答案
【单选题】A bank run occurs when______.
A.
a bank is closed for one or more days
B.
too many depositors attempt to draw out their money at one time
C.
there is not enough money to pay all of its depositors at one time
D.
employees of a bank take their own funds out of the bank
查看完整题目与答案
【单选题】A bank run happens when ______.
A.
a bank is closed for one or more days
B.
too many depositors try to draw out their money at one time
C.
there is not enough money to pay all its depositors at one time
D.
tellers of a bank take their own money from the bank
查看完整题目与答案