皮皮学，免费搜题
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【单选题】
微机继电保护装置的周期为新安装的护装置( )年内进行1次全部检验,以后每( )年进行次全部 检验,每1~2年进行1次部分检验。
A.
1、6
B.
1.5、7
C.
1、7
D.
0
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举一反三
【单选题】Which one is not the reason why Afghanistan government can not eliminate opium quickly?
A.
Opium is closely related with the economy situation of Afghanistan people
B.
It is a hard job which needs time
C.
Afghanistan is not a democratic country
D.
It is a problem left by history and it need more patience
查看完整题目与答案
【单选题】在RLC串联电路中，产生串联谐振时，回路的总电抗Z等于（）。
A.
0
B.
∞
C.
R
查看完整题目与答案
【单选题】RLC串联谐振电路中,电阻两端电压____总电压,电感与电容两端电压相等,相位相反,且为总电压的____倍,谐振阻抗表达式为______。
A.
不等于, Q,
B.
等于,Q,
C.
等于, 1/Q,
D.
不等于,1/Q,
查看完整题目与答案
【单选题】下列关于乳腺癌的描述，错误的是
A.
粉刺癌多位于乳腺中央部位
B.
小叶原位癌多有间质的炎症反应和纤维组织增生
C.
佩吉特病的乳头和乳晕呈湿疹样改变
D.
浸润性导管癌是最常见的乳腺癌类型
查看完整题目与答案
【单选题】图 1-2-16 中, R 2 = R 4 , U ad = 150V , U ce = -70V ,则 AB 间的电压 Uab 为( )
A.
150V
B.
70V
C.
220V
D.
180V
查看完整题目与答案
【单选题】Which one is NOT the reason for the airtight security at the data center?
A.
There are dangers posed by hackers.
B.
There is only one Visa center in North America.
C.
There is considerable growth in mobile purchases.
D.
There are a large number of daily transactions processed here.
查看完整题目与答案
【单选题】若RLC串联谐振电路中电阻值小于容抗，则电容电压有效值（）电源总电压有效值。
A.
大于
B.
小于
C.
等于
D.
查看完整题目与答案
【单选题】Among the following which one is not the negative consequence according to the passage?
A.
The kids are emotionally fragile and they can't stand on their own.
B.
They don't know how to make sound decisions.
C.
They aren't equipped to deal with failure and frustration.
D.
They are lucky to have their parents aroun
查看完整题目与答案
【单选题】下列关于乳腺癌的描述,哪项是错误的
A.
乳房外上象限发生率最高
B.
癌细胞阻塞于皮下、皮内淋巴管可出现橘皮征
C.
Paget病人原发灶在乳头区大乳管内
D.
治疗方针是尽早手术，辅以放疗、化疗
E.
骨转移的主要部位是肋骨
查看完整题目与答案
【简答题】习题1-1 在图 1-1 所示电路中,已知 R 2 = R 4 , U AD = 15V , U CE = 10V ,试用电位差的概念计算 U AB 。
查看完整题目与答案
相关题目：
【单选题】Which one is not the reason why Afghanistan government can not eliminate opium quickly?
A.
Opium is closely related with the economy situation of Afghanistan people
B.
It is a hard job which needs time
C.
Afghanistan is not a democratic country
D.
It is a problem left by history and it need more patience
查看完整题目与答案
【单选题】在RLC串联电路中，产生串联谐振时，回路的总电抗Z等于（）。
A.
0
B.
∞
C.
R
查看完整题目与答案
【单选题】RLC串联谐振电路中,电阻两端电压____总电压,电感与电容两端电压相等,相位相反,且为总电压的____倍,谐振阻抗表达式为______。
A.
不等于, Q,
B.
等于,Q,
C.
等于, 1/Q,
D.
不等于,1/Q,
查看完整题目与答案
【单选题】下列关于乳腺癌的描述，错误的是
A.
粉刺癌多位于乳腺中央部位
B.
小叶原位癌多有间质的炎症反应和纤维组织增生
C.
佩吉特病的乳头和乳晕呈湿疹样改变
D.
浸润性导管癌是最常见的乳腺癌类型
查看完整题目与答案
【单选题】图 1-2-16 中, R 2 = R 4 , U ad = 150V , U ce = -70V ,则 AB 间的电压 Uab 为( )
A.
150V
B.
70V
C.
220V
D.
180V
查看完整题目与答案
【单选题】Which one is NOT the reason for the airtight security at the data center?
A.
There are dangers posed by hackers.
B.
There is only one Visa center in North America.
C.
There is considerable growth in mobile purchases.
D.
There are a large number of daily transactions processed here.
查看完整题目与答案
【单选题】若RLC串联谐振电路中电阻值小于容抗，则电容电压有效值（）电源总电压有效值。
A.
大于
B.
小于
C.
等于
D.
查看完整题目与答案
【单选题】Among the following which one is not the negative consequence according to the passage?
A.
The kids are emotionally fragile and they can't stand on their own.
B.
They don't know how to make sound decisions.
C.
They aren't equipped to deal with failure and frustration.
D.
They are lucky to have their parents aroun
查看完整题目与答案
【单选题】下列关于乳腺癌的描述,哪项是错误的
A.
乳房外上象限发生率最高
B.
癌细胞阻塞于皮下、皮内淋巴管可出现橘皮征
C.
Paget病人原发灶在乳头区大乳管内
D.
治疗方针是尽早手术，辅以放疗、化疗
E.
骨转移的主要部位是肋骨
查看完整题目与答案
【简答题】习题1-1 在图 1-1 所示电路中,已知 R 2 = R 4 , U AD = 15V , U CE = 10V ,试用电位差的概念计算 U AB 。
查看完整题目与答案