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【简答题】
有一OTL电路如下图所示。设电源电压 V CC = 20V, R L = 8Ω,三极管T 2 ,T 3 的 β = 20, V C(BR)CEO = 70V, I CM = 4A, P CM = 20W(加散热片)试求: (1)在理想极限运用情况下的 P om 值; (2)当不失真输出功率 P o = 3.65W时的效率 η (3)若 V CC 改为24V, R L 改为3.5Ω,此时的 P om 为多大?三极管能否安全工作?要求基极提供的峰值电流 i Bmax 为多大?
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参考答案：
举一反三
【单选题】---“Don’t read in bed.” --- What did he said? ---He told us _____read in bed.
A.
not to
B.
not
C.
don’t
D.
didn’t
查看完整题目与答案
【单选题】How long have you been staying in bed?
A.
I have been staying in bed for two hours.
B.
I  stayed in bed for two hours.
查看完整题目与答案
【多选题】关于企业所有者权益，下列说法中正确的有( )。
A.
资本公积可以弥补企业亏损
B.
盈余公积可以按照规定转增资本
C.
未分配利润可以弥补亏损
D.
资本公积可以按照规定转增资本
查看完整题目与答案
【单选题】Reading in bed is bad your eyes. [     ]
A.
at
B.
of
C.
in
D.
for
查看完整题目与答案
【单选题】In paragraph 12, why didn't Anne allow the author to have breakfast in bed?
A.
She wanted to show him that it's not time to be proud and he should be tough.
B.
She thought that he was recovered enough to have breakfast in the regular place.
C.
She thought that eating breakfast in bed was not good to his revovery.
D.
She didn't want him to become a lazy person.
查看完整题目与答案
【多选题】关于所有者权益，下列说法中正确的有（ ）。
A.
所有者权益是指企业资产扣除负债后由所有者享有的剩余权益
B.
直接计人资本公积的利得和损失属于所有者权益
C.
所有者权益金额应单独计量，不取决于资产和负债的计量
D.
所有者权益项目应当列入利润表
查看完整题目与答案
【单选题】—Where is your mother? —She _____ because she is ill. [     ]
A.
lies in the bed
B.
lying in bed
C.
is lying in bed
D.
lies in bed
查看完整题目与答案
【简答题】In a room at Texas Children Cancer Center in Houston, eight-year-old Simran Jatar lay in bed with a drip (点滴) above her to fight her bone cancer. Over her bald (秃的) head, she wore a pink hat that matc...
查看完整题目与答案
【多选题】关于企业的所有者权益，下列说法中正确的有（ ）。
A.
是债权人的要求权
B.
是所有者的要求权
C.
也称为净资产
D.
公司制企业也称为股东权益
E.
是一种剩余权益
查看完整题目与答案
【单选题】You look very tired today. You should stay  _____ and have a good rest. [       ]
A.
in
B.
in bed
C.
in a bed
D.
in the bed
查看完整题目与答案
相关题目：
【单选题】---“Don’t read in bed.” --- What did he said? ---He told us _____read in bed.
A.
not to
B.
not
C.
don’t
D.
didn’t
查看完整题目与答案
【单选题】How long have you been staying in bed?
A.
I have been staying in bed for two hours.
B.
I  stayed in bed for two hours.
查看完整题目与答案
【多选题】关于企业所有者权益，下列说法中正确的有( )。
A.
资本公积可以弥补企业亏损
B.
盈余公积可以按照规定转增资本
C.
未分配利润可以弥补亏损
D.
资本公积可以按照规定转增资本
查看完整题目与答案
【单选题】Reading in bed is bad your eyes. [     ]
A.
at
B.
of
C.
in
D.
for
查看完整题目与答案
【单选题】In paragraph 12, why didn't Anne allow the author to have breakfast in bed?
A.
She wanted to show him that it's not time to be proud and he should be tough.
B.
She thought that he was recovered enough to have breakfast in the regular place.
C.
She thought that eating breakfast in bed was not good to his revovery.
D.
She didn't want him to become a lazy person.
查看完整题目与答案
【多选题】关于所有者权益，下列说法中正确的有（ ）。
A.
所有者权益是指企业资产扣除负债后由所有者享有的剩余权益
B.
直接计人资本公积的利得和损失属于所有者权益
C.
所有者权益金额应单独计量，不取决于资产和负债的计量
D.
所有者权益项目应当列入利润表
查看完整题目与答案
【单选题】—Where is your mother? —She _____ because she is ill. [     ]
A.
lies in the bed
B.
lying in bed
C.
is lying in bed
D.
lies in bed
查看完整题目与答案
【简答题】In a room at Texas Children Cancer Center in Houston, eight-year-old Simran Jatar lay in bed with a drip (点滴) above her to fight her bone cancer. Over her bald (秃的) head, she wore a pink hat that matc...
查看完整题目与答案
【多选题】关于企业的所有者权益，下列说法中正确的有（ ）。
A.
是债权人的要求权
B.
是所有者的要求权
C.
也称为净资产
D.
公司制企业也称为股东权益
E.
是一种剩余权益
查看完整题目与答案
【单选题】You look very tired today. You should stay  _____ and have a good rest. [       ]
A.
in
B.
in bed
C.
in a bed
D.
in the bed
查看完整题目与答案
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