皮皮学,免费搜题
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搜题
【多选题】
依据人类基本需要理论,影响需要满足的因素包括(2013/4)
A.
情绪因素
B.
个性特点
C.
环境因素
D.
价值观
E.
知识
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参考解析:
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举一反三
【单选题】某晶体管的发射极电流是1mA, 基极电流是20uA, 则它的集电极电流是
A.
0.98mA
B.
1.02mA
C.
0.8mA
D.
1.2mA
【简答题】在某放大电路中,测得晶体管的三个电极1、2、3的流入电流分别为-1.22mA、0.02mA、1.2mA。 由此可判断电极1是____,电极2是____,电极3是____(A、发射极, B、基极, C、集电极); 该晶体管的类型是____(A、PNP型 ,B、NPN型); 该晶体管的共射电流放大系数约为____( A、40 , B、60 , C、100)。
【单选题】----The boss said we had only three days to finish the task. ----No problem. We have already _________ two thirds of it.
A.
got over
B.
given away
C.
got through
D.
made out
【单选题】一选择题有四个选项,由经验数据可知学生知道答案的概率是0.8。现随机抽取一名学生的试卷,发现该题回答正确,则此学生确实知道正确答案的概率是________。
A.
16/17
B.
0.8
C.
0.85
D.
0.5
【单选题】We had three sets of garden tools and we seemed to have no use for ______. [      ]
A.
none
B.
either
C.
any
D.
each
【简答题】一选择题有四个选项,由经验数据可知学生知道答案的概率是0.8. 现随机抽取一名学生的试卷,发现该题回答正确,求此学生确实知道正确答案的概率
【简答题】一选择题有四个选项,由经验数据可知学生知道答案的概率是0.8。现随机抽取一名学生的试卷,发现该题回答正确,则此学生确实知道正确答案的概率是________。(保留三位有效数字)
【单选题】It's the first time that we ______ a quarrel.
A.
have
B.
have had
C.
had
D.
had had
【单选题】We (had lived) in this house for three years (while) my father decided (to have) us (move) to a new neighborhood.
A.
had lived
B.
while
C.
to have
D.
move
【单选题】The country needs a ______ government. We have had three prime ministers in a year.
A.
stationary
B.
changeless
C.
constant
D.
stable
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