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【单选题】
晶体三极管按构造分,有()两种类型。
A.
PPN和删
B.
PPN和PNN
C.
1P和NPN
D.
PNP和PNN
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参考答案:
举一反三
【简答题】The rapid growth of microcomputer systems since the late 1970s has now resulted in BASIC being very likely the most widely used computer language in the world.
【判断题】根据发动机的压缩比选用汽油时,压缩比大,应选用高牌号的汽油。 ( )
A.
正确
B.
错误
【单选题】The plastic bags were first produced in the 1970s and grew increasingly popular since the 1980s.
A.
Y
B.
N
C.
NG
【简答题】The U. S. population of kids (grow) __________ since the 1970s, and will remain at high levels through the 1990s.
【单选题】Since the late 1970s, in the face of a severe loss of market share in dozens of industries, manufacturers in the United States have been trying to improve productivity and therefore enhance their inte...
A.
summarizing a thesis
B.
recommending a different approach
C.
comparing points of view
D.
making a series of predictions
【单选题】犬肝胆系统超声检查的部位在( )
A.
右侧第8~9肋间
B.
左侧第9~10肋间
C.
右侧第9~10肋间
D.
左侧第10~12肋间
E.
右侧第10~12肋间
【单选题】4 天工开物是什么时期科技著作
A.
清代
B.
明代
C.
宋代
D.
唐代
【单选题】Since 1970s, there is a tremendous growth in ____________.
A.
manufacturing industry
B.
foreign trade
C.
high-tech industry
D.
the service sector
【单选题】申请参加护士执业资格考试者的最低学历要求是具有 () 文凭。
A.
中专
B.
大专
C.
本科
D.
硕士
【单选题】在 SELECT 语句中 WHERE 子句表示
A.
逻辑运算
B.
模糊查询
C.
查询指定的列
D.
指定查询条件
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