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【单选题】
丹麦物理学家雅各布？博尔对收集起来的花瓶碎片进行研究后发现，碎片按大小可以分成四个类别，其重量存在着倍数关系，即较大块的重量是次大块的16倍。“碎花瓶理论”在恢复文物、陨石等不知其原貌的物体研究方面带来了意想不到的效果。这一发现启示我们（）。 ①事物之间的联系具有客观性和必然性 ②认识的发展具有反复性和循环性 ③人们通过自觉活动可以认识和利用规律 ④实践是主观能动性与客观规律相统一的基础
A.
①②
B.
①③
C.
②④
D.
③④
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参考答案：
举一反三
【判断题】In the case of the amplifier, the current through the device varies continuously according to a controlled input.
A.
正确
B.
错误
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【单选题】因形成络合物而增大溶解度的是
A.
增溶剂
B.
助溶剂
C.
潜溶剂
D.
溶剂
查看完整题目与答案
【单选题】听力原文：W: Hi,Bill.Have you finished the paper assigned by Professor Smith? M: Well,that's why I am still here rather than going to play basketball with my roommates. Q: What do we learn about the man fr...
A.
He will finish the paper rafter playing basketball.
B.
He hasn't finished doing his assignment yet.
C.
He stays in the dormitory with his roommates.
D.
He is playing basketball with his roommates.
查看完整题目与答案
【单选题】In the circuit, if , the current through the dependent source is:
A.
0A
B.
6A
C.
2A
D.
3A
查看完整题目与答案
【单选题】The voltage regulator controls the current through _____.
A.
The generator brushes
B.
The rotor
C.
The generator field
D.
All of the above
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【多选题】晶闸管三个电极分别是阳极、阴极和 [填空(1)] 极，具有 [填空(2)] 性。
A.
门（或控制）
B.
单向可控导电
查看完整题目与答案
【简答题】有一本英文小说,他在计算机中用纯文本形式表示,文件扩展名为txt,大小为1KB,该小说所包含字母(字母,数字,标点符号等)的总数是 个
查看完整题目与答案
【简答题】— He hasn’t finished the work yet. — Well, he _____. A.ought              B. ought to C. oughtto have       D. ought to have finished
查看完整题目与答案
【简答题】晶闸管三个电极分别是阳极、阴极和[填空(1)]极，具有[填空(2)]性。A. 门（或控制）B. 单向可控导电
查看完整题目与答案
【单选题】The voltage across an inductor leads the current through it by .
A.
0 °
B.
90 °
C.
-90 °
D.
180 °
查看完整题目与答案
相关题目：
【判断题】In the case of the amplifier, the current through the device varies continuously according to a controlled input.
A.
正确
B.
错误
查看完整题目与答案
【单选题】因形成络合物而增大溶解度的是
A.
增溶剂
B.
助溶剂
C.
潜溶剂
D.
溶剂
查看完整题目与答案
【单选题】听力原文：W: Hi,Bill.Have you finished the paper assigned by Professor Smith? M: Well,that's why I am still here rather than going to play basketball with my roommates. Q: What do we learn about the man fr...
A.
He will finish the paper rafter playing basketball.
B.
He hasn't finished doing his assignment yet.
C.
He stays in the dormitory with his roommates.
D.
He is playing basketball with his roommates.
查看完整题目与答案
【单选题】In the circuit, if , the current through the dependent source is:
A.
0A
B.
6A
C.
2A
D.
3A
查看完整题目与答案
【单选题】The voltage regulator controls the current through _____.
A.
The generator brushes
B.
The rotor
C.
The generator field
D.
All of the above
查看完整题目与答案
【多选题】晶闸管三个电极分别是阳极、阴极和 [填空(1)] 极，具有 [填空(2)] 性。
A.
门（或控制）
B.
单向可控导电
查看完整题目与答案
【简答题】有一本英文小说,他在计算机中用纯文本形式表示,文件扩展名为txt,大小为1KB,该小说所包含字母(字母,数字,标点符号等)的总数是 个
查看完整题目与答案
【简答题】— He hasn’t finished the work yet. — Well, he _____. A.ought              B. ought to C. oughtto have       D. ought to have finished
查看完整题目与答案
【简答题】晶闸管三个电极分别是阳极、阴极和[填空(1)]极，具有[填空(2)]性。A. 门（或控制）B. 单向可控导电
查看完整题目与答案
【单选题】The voltage across an inductor leads the current through it by .
A.
0 °
B.
90 °
C.
-90 °
D.
180 °
查看完整题目与答案
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