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【多选题】
第二章31.下列对我国古代四大发明之一的印刷术的描述中,正确的是( )
A.
印刷术被称为人类“文明之母”，是中华名族对世界文明的又一大重大贡献
B.
印刷术可以分为雕版印刷术和活字印刷术两种类型
C.
雕版应刷术是在宋朝日臻成熟，开始大量印刷书籍
D.
《金刚经》是我国发现最早的标有确切年代的雕版印刷品
E.
北宋毕昇发明了活字印刷术。这是排版印刷的开始，它既经济又快捷，堪称人类印刷史上的空前革命
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【单选题】— Linda has changed a lot! She's so quiet! — You're right. She _____ noisy. [     ]
A.
uses to be
B.
used to be
C.
uses to being
D.
used to being
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【单选题】在电容滤波的桥式整流电路中,若变压器二次侧电压为 ,则整流输出电压的平均值为( )。
A.
1.2U
B.
0.9U
C.
0.45U
D.
U
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【简答题】翻译下面句子: H o w e v e r , another idea has been widespread among m a them a ticians a t least since the time of the ancient Greeks, and its st a tement d a tes back to Pl a t o , w hose di f f erent vie...
查看完整题目与答案
【单选题】在有电容滤波的单相桥式整流电路中，若要保证输出电压为45V，则变压器二次电压有效值应为( )。
A.
37.5V
B.
45V
C.
50V
D.
100V
查看完整题目与答案
【单选题】在有电容滤波的单相桥式整流电路中，若要保证输出电压为45V，则变压器二次电压有效值应为()V。
A.
37.5
B.
45
C.
50
D.
100
查看完整题目与答案
【单选题】The room was so quiet that she could hear the____of her heart.
A.
hitting
B.
beating
C.
hurting
D.
striking
查看完整题目与答案
【单选题】Tina isn’t so quiet as she . She is much more outgoing now.
A.
did
B.
used to
C.
was used to
D.
used to be
查看完整题目与答案
【单选题】I’m quiet, but Laura likes talking with people. So she is _______ than me.
A.
outgoing
B.
more outgoing
C.
outgoinger
D.
the most outgoing
查看完整题目与答案
【单选题】Kate is _____ quiet. She is so shy. [     ]
A.
very
B.
even
C.
more
D.
little
查看完整题目与答案
【单选题】Passage 1 Question 1
A.
B.
C.
D.
D
查看完整题目与答案
相关题目：
【单选题】— Linda has changed a lot! She's so quiet! — You're right. She _____ noisy. [     ]
A.
uses to be
B.
used to be
C.
uses to being
D.
used to being
查看完整题目与答案
【单选题】在电容滤波的桥式整流电路中,若变压器二次侧电压为 ,则整流输出电压的平均值为( )。
A.
1.2U
B.
0.9U
C.
0.45U
D.
U
查看完整题目与答案
【简答题】翻译下面句子: H o w e v e r , another idea has been widespread among m a them a ticians a t least since the time of the ancient Greeks, and its st a tement d a tes back to Pl a t o , w hose di f f erent vie...
查看完整题目与答案
【单选题】在有电容滤波的单相桥式整流电路中，若要保证输出电压为45V，则变压器二次电压有效值应为( )。
A.
37.5V
B.
45V
C.
50V
D.
100V
查看完整题目与答案
【单选题】在有电容滤波的单相桥式整流电路中，若要保证输出电压为45V，则变压器二次电压有效值应为()V。
A.
37.5
B.
45
C.
50
D.
100
查看完整题目与答案
【单选题】The room was so quiet that she could hear the____of her heart.
A.
hitting
B.
beating
C.
hurting
D.
striking
查看完整题目与答案
【单选题】Tina isn’t so quiet as she . She is much more outgoing now.
A.
did
B.
used to
C.
was used to
D.
used to be
查看完整题目与答案
【单选题】I’m quiet, but Laura likes talking with people. So she is _______ than me.
A.
outgoing
B.
more outgoing
C.
outgoinger
D.
the most outgoing
查看完整题目与答案
【单选题】Kate is _____ quiet. She is so shy. [     ]
A.
very
B.
even
C.
more
D.
little
查看完整题目与答案
【单选题】Passage 1 Question 1
A.
B.
C.
D.
D
查看完整题目与答案
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