皮皮学，免费搜题
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搜题
【单选题】
就人而言,判定一种声音是否为噪音是由( )所决定的。
A.
主观评价
B.
声音大小
C.
分贝值
D.
发声体
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
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..
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举一反三
【单选题】Nearly half a million immigrants，many of them English—speaking， in the country during the last quarter of the nineteenth century．
A.
have arrived
B.
had arrived
C.
arrived
D.
have been arriving
查看完整题目与答案
【单选题】某交流用电器的额定电压为220 V 、额定频率为50 Hz ,其两端加上下列哪种正弦电压,会保证其正常工作______。
A.
220 sin（ 314t +45º ）V
B.
220 sin（ 314t +45º ）V
C.
380 sin（ 314t +45º ）V
D.
220 sin（50 t +45º ）V
查看完整题目与答案
【单选题】According to the essay, what role has English played during the process of globalization?
A.
It has created new education opportunities.
B.
It has sped up the process of globalization.
C.
It has opened the doors for new opportunities and increased the number of young women in the working world.
D.
It has increased the number of skilled women.
查看完整题目与答案
【判断题】与热电阻相比,热电偶能够测量更高的温度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】It was during ______ when the English navy defeated the Spanish Armada.
A.
the Middle Ages
B.
the 16th century
C.
the Elizabethan age
D.
the Wars of the Roses
查看完整题目与答案
【单选题】Which of the following is not the French word borrowed into English during the Middle Ages?
A.
sergeant
B.
battle
C.
spy
D.
fight
查看完整题目与答案
【单选题】某交流用电器的额定电压为220V、额定频率为50Hz,其两端加上下列哪种正弦电压,会保证其正常工作______。
A.
–311sin314tV
B.
220sin314tV
C.
380sin314tV
D.
311sin50tV
查看完整题目与答案
【单选题】某交流用电器的额定电压为 220V 、额定频率为 50Hz ,其两端加上下列哪种正弦电压,会保证其工作正常?
A.
u=-220 sin314tV
B.
u=220sin314tV
C.
u=380sin314tV
D.
u=-220 sin50tV
查看完整题目与答案
【多选题】卢浮宫的宫中三宝是( )
A.
《蒙娜丽莎》
B.
《爱神维纳斯》
C.
《自由女神像》
D.
《胜利女神》
E.
《雅典娜女神》
查看完整题目与答案
【单选题】某交流用电器的额定电压为220V、额定频率为50Hz,其两端加上下列哪种正弦电压,会保证其正常工作
A.
V
B.
V
C.
V
D.
V
查看完整题目与答案
相关题目：
【单选题】Nearly half a million immigrants，many of them English—speaking， in the country during the last quarter of the nineteenth century．
A.
have arrived
B.
had arrived
C.
arrived
D.
have been arriving
查看完整题目与答案
【单选题】某交流用电器的额定电压为220 V 、额定频率为50 Hz ,其两端加上下列哪种正弦电压,会保证其正常工作______。
A.
220 sin（ 314t +45º ）V
B.
220 sin（ 314t +45º ）V
C.
380 sin（ 314t +45º ）V
D.
220 sin（50 t +45º ）V
查看完整题目与答案
【单选题】According to the essay, what role has English played during the process of globalization?
A.
It has created new education opportunities.
B.
It has sped up the process of globalization.
C.
It has opened the doors for new opportunities and increased the number of young women in the working world.
D.
It has increased the number of skilled women.
查看完整题目与答案
【判断题】与热电阻相比,热电偶能够测量更高的温度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】It was during ______ when the English navy defeated the Spanish Armada.
A.
the Middle Ages
B.
the 16th century
C.
the Elizabethan age
D.
the Wars of the Roses
查看完整题目与答案
【单选题】Which of the following is not the French word borrowed into English during the Middle Ages?
A.
sergeant
B.
battle
C.
spy
D.
fight
查看完整题目与答案
【单选题】某交流用电器的额定电压为220V、额定频率为50Hz,其两端加上下列哪种正弦电压,会保证其正常工作______。
A.
–311sin314tV
B.
220sin314tV
C.
380sin314tV
D.
311sin50tV
查看完整题目与答案
【单选题】某交流用电器的额定电压为 220V 、额定频率为 50Hz ,其两端加上下列哪种正弦电压,会保证其工作正常?
A.
u=-220 sin314tV
B.
u=220sin314tV
C.
u=380sin314tV
D.
u=-220 sin50tV
查看完整题目与答案
【多选题】卢浮宫的宫中三宝是( )
A.
《蒙娜丽莎》
B.
《爱神维纳斯》
C.
《自由女神像》
D.
《胜利女神》
E.
《雅典娜女神》
查看完整题目与答案
【单选题】某交流用电器的额定电压为220V、额定频率为50Hz,其两端加上下列哪种正弦电压,会保证其正常工作
A.
V
B.
V
C.
V
D.
V
查看完整题目与答案