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【简答题】
2010年世博会在中国上海举办。期间，许多科技产品也会像1939年纽约世博会上首次亮相的电视机一样，迅速在世界范围内普及。 （1）看电视时，人们可以通过遥控器发出的_______（填“红外线”或“紫外线”）的_______ （填“速度”或“频率”）来调控电视机的频道。有时遥控器对着平行于电视机屏幕的墙面同样可以对电视进行遥控，这说明墙面能________电磁波。电磁波在真空中的传播速度是_______m／s。 （2）彩色电视机画面上丰富多彩的颜色是由红、 _______、颜色的光混合而成的，电视机屏幕上容易“沾”上灰尘，是因为屏幕上带有__________ 。将磁体在普通电视机屏幕表面晃动时，屏幕上的图像_________（填“不会受影响”或“会发生畸变”）。 （3）电视机工作时，电能主要转化为声能、 _______能和_______能。某台电视机工作2min，铭牌上标有3000r／kW·h的电能表的表盘转过了15r，电视机功率是________ W。
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参考答案：
举一反三
【单选题】( )是车身倾斜的原因。
A.
后桥异响
B.
主销变形
C.
车架轻微变形
D.
单侧悬挂弹簧弹力不足
查看完整题目与答案
【单选题】--Kathy and her sister are so alike． --Yeah, I can’t tell one from ________．
A.
another
B.
other
C.
the other
D.
others
查看完整题目与答案
【单选题】( )是车身倾斜的原因。
A.
后桥异响
B.
主销变形
C.
车架轻微变形
D.
单侧悬架弹簧弹力不足
查看完整题目与答案
【单选题】女，28岁，孕40周。现在产房，试问宫口开全后，开始保护会阴的时间是
A.
经阴道外口看到胎发时
B.
胎头拨露阴唇后联合紧张时
C.
胎头拨露10分钟时
D.
胎头开始拨露
E.
胎头开始着冠时
查看完整题目与答案
【单选题】The author views deja vu as______.
A.
an issue that defies explanation, forcing one to rely on supposition
B.
the phenomena that is best answered by science
C.
a contentious issue that is hard to resolve
D.
a question with different answers based on whether one believes in religion, mysticism or science most strongly
查看完整题目与答案
【单选题】宫口开全后,开始保护会阴的正确时间是
A.
胎头着冠以后
B.
胎头开始拨露
C.
看见胎发后
D.
胎头拨露，致后联合紧张时
E.
宫口开全，会阴消毒以后
查看完整题目与答案
【判断题】The arguments over tube babies are not so much a moral issue and a legal one. This sentence means the arguments over tube babies are equally regarded as a moral issue and a legal one.
A.
正确
B.
错误
查看完整题目与答案
【单选题】-Of all the skirts, the red one looks as ______ as the others. -I think so. And it's ______ than the others. [     ]
A.
beautifully ; quite cheaper
B.
beautiful ; much cheaper
C.
beautifully ; more cheap
D.
beautiful ; much more cheaper
查看完整题目与答案
【单选题】宫口开全后,开始保护会阴的正确时间是:
A.
胎头着冠以后
B.
胎头开始拨露
C.
看见胎发以后
D.
胎头拨露，致阴唇后联合紧张时
E.
宫口开全，会阴消毒以后
查看完整题目与答案
【单选题】This issue is so complicated because______.
A.
the pope has no capacity to deal with it
B.
it involve two poles of near certainty
C.
it may affect the pope's orthodoxy
D.
there are two parties on this issue in the church
查看完整题目与答案
相关题目：
【单选题】( )是车身倾斜的原因。
A.
后桥异响
B.
主销变形
C.
车架轻微变形
D.
单侧悬挂弹簧弹力不足
查看完整题目与答案
【单选题】--Kathy and her sister are so alike． --Yeah, I can’t tell one from ________．
A.
another
B.
other
C.
the other
D.
others
查看完整题目与答案
【单选题】( )是车身倾斜的原因。
A.
后桥异响
B.
主销变形
C.
车架轻微变形
D.
单侧悬架弹簧弹力不足
查看完整题目与答案
【单选题】女，28岁，孕40周。现在产房，试问宫口开全后，开始保护会阴的时间是
A.
经阴道外口看到胎发时
B.
胎头拨露阴唇后联合紧张时
C.
胎头拨露10分钟时
D.
胎头开始拨露
E.
胎头开始着冠时
查看完整题目与答案
【单选题】The author views deja vu as______.
A.
an issue that defies explanation, forcing one to rely on supposition
B.
the phenomena that is best answered by science
C.
a contentious issue that is hard to resolve
D.
a question with different answers based on whether one believes in religion, mysticism or science most strongly
查看完整题目与答案
【单选题】宫口开全后,开始保护会阴的正确时间是
A.
胎头着冠以后
B.
胎头开始拨露
C.
看见胎发后
D.
胎头拨露，致后联合紧张时
E.
宫口开全，会阴消毒以后
查看完整题目与答案
【判断题】The arguments over tube babies are not so much a moral issue and a legal one. This sentence means the arguments over tube babies are equally regarded as a moral issue and a legal one.
A.
正确
B.
错误
查看完整题目与答案
【单选题】-Of all the skirts, the red one looks as ______ as the others. -I think so. And it's ______ than the others. [     ]
A.
beautifully ; quite cheaper
B.
beautiful ; much cheaper
C.
beautifully ; more cheap
D.
beautiful ; much more cheaper
查看完整题目与答案
【单选题】宫口开全后,开始保护会阴的正确时间是:
A.
胎头着冠以后
B.
胎头开始拨露
C.
看见胎发以后
D.
胎头拨露，致阴唇后联合紧张时
E.
宫口开全，会阴消毒以后
查看完整题目与答案
【单选题】This issue is so complicated because______.
A.
the pope has no capacity to deal with it
B.
it involve two poles of near certainty
C.
it may affect the pope's orthodoxy
D.
there are two parties on this issue in the church
查看完整题目与答案
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