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【单选题】
汽车启动电机启动电流略是
A.
70——100A
B.
7——10A
C.
700——1000A
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参考答案：
举一反三
【单选题】Questions 11 and 15 are based on the following passage. That people often experience trouble sleeping in a different bed in unfamiliar surroundings is a phenomenon known as the “first-night” effect....
A.
She monitored the brain activity of participants sleeping in a new environment.
B.
She recruited 35 participants from her Department of Psychological Sciences.
C.
She studied the differences between the two sides of participants’ brains.
D.
She tested her findings about birds and dolphins on human subjects.
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【单选题】Questions 11 and 15 are based on the following passage. That people often experience trouble sleeping in a different bed in unfamiliar surroundings is a phenomenon known as the “first-night” effect....
A.
She analyzed the negative effect of irregular tones on brains.
B.
She recorded participants’ adaptation to changed environment.
C.
She exposed her participants to two different stimuli.
D.
She compared the responses of different participants.
查看完整题目与答案
【单选题】A diffraction pattern is produced on a viewing screen by illuminating a long narrow slit with light of wavelength λ. If the slit width is decreased and no other changes are made
A.
the intensity at the center of the pattern decreases and the pattern expands away from the bright center
B.
the intensity at the center of the pattern increases and the pattern contracts toward the bright center
C.
the intensity at the center of the pattern does not change and the pattern expands away from the bright center
D.
the intensity at the center of the pattern does not change and the pattern contracts toward the bright center
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【单选题】Studies of the effect that makes many of us slumber or feel sleepy during the queen’s speech on Christmas Day have revealed that changes may be required in Britain’s drink drive legislation. Dr. James...
A.
like to take a short nap after lunch
B.
don’t take a short nap after lunch
C.
don't feel sleepy after lunch
D.
like to sleep twice a day
查看完整题目与答案
【单选题】According to Dr. Neil, what is the most noticeable effect of smaller families?
A.
There is less mixing of ages in smaller families.
B.
Children can get more affection from their parents.
C.
Children can live in a more loving environment.
D.
Children are able to enjoy better living condition.
查看完整题目与答案
【单选题】According to Dr. Nell, what is the most noticeable effect of smaller families?
A.
There is less mixing of ages in smaller families.
B.
Children can get more affection from their parents.
C.
Children can live in a more loving environment.
D.
Children are able to enjoy better living condition.
查看完整题目与答案
【单选题】患者，男性，40岁，左下肢肿胀伴疼痛四天，B超示左股静脉血栓形成，在家属扶助下步行入院，其最严重的并发症为
A.
肺动脉栓塞
B.
丧失劳动能力
C.
下肢静脉曲张
D.
下肢溃疡
E.
下肢严重水肿，坏死
查看完整题目与答案
【判断题】Dr. Todorov researched the effect of photos on choosing an insurance agent.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Two narrow slits 80 mm apart are illuminated with light of wavelength 600 nm. What is the angle of the m = 3 bright fringe in radians?
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【简答题】Light of wavelength 600 nm illuminates a diffraction grating. The second-order maximum is at angle . How many lines per millimeter does this grating have?
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相关题目：
【单选题】Questions 11 and 15 are based on the following passage. That people often experience trouble sleeping in a different bed in unfamiliar surroundings is a phenomenon known as the “first-night” effect....
A.
She monitored the brain activity of participants sleeping in a new environment.
B.
She recruited 35 participants from her Department of Psychological Sciences.
C.
She studied the differences between the two sides of participants’ brains.
D.
She tested her findings about birds and dolphins on human subjects.
查看完整题目与答案
【单选题】Questions 11 and 15 are based on the following passage. That people often experience trouble sleeping in a different bed in unfamiliar surroundings is a phenomenon known as the “first-night” effect....
A.
She analyzed the negative effect of irregular tones on brains.
B.
She recorded participants’ adaptation to changed environment.
C.
She exposed her participants to two different stimuli.
D.
She compared the responses of different participants.
查看完整题目与答案
【单选题】A diffraction pattern is produced on a viewing screen by illuminating a long narrow slit with light of wavelength λ. If the slit width is decreased and no other changes are made
A.
the intensity at the center of the pattern decreases and the pattern expands away from the bright center
B.
the intensity at the center of the pattern increases and the pattern contracts toward the bright center
C.
the intensity at the center of the pattern does not change and the pattern expands away from the bright center
D.
the intensity at the center of the pattern does not change and the pattern contracts toward the bright center
查看完整题目与答案
【单选题】Studies of the effect that makes many of us slumber or feel sleepy during the queen’s speech on Christmas Day have revealed that changes may be required in Britain’s drink drive legislation. Dr. James...
A.
like to take a short nap after lunch
B.
don’t take a short nap after lunch
C.
don't feel sleepy after lunch
D.
like to sleep twice a day
查看完整题目与答案
【单选题】According to Dr. Neil, what is the most noticeable effect of smaller families?
A.
There is less mixing of ages in smaller families.
B.
Children can get more affection from their parents.
C.
Children can live in a more loving environment.
D.
Children are able to enjoy better living condition.
查看完整题目与答案
【单选题】According to Dr. Nell, what is the most noticeable effect of smaller families?
A.
There is less mixing of ages in smaller families.
B.
Children can get more affection from their parents.
C.
Children can live in a more loving environment.
D.
Children are able to enjoy better living condition.
查看完整题目与答案
【单选题】患者，男性，40岁，左下肢肿胀伴疼痛四天，B超示左股静脉血栓形成，在家属扶助下步行入院，其最严重的并发症为
A.
肺动脉栓塞
B.
丧失劳动能力
C.
下肢静脉曲张
D.
下肢溃疡
E.
下肢严重水肿，坏死
查看完整题目与答案
【判断题】Dr. Todorov researched the effect of photos on choosing an insurance agent.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Two narrow slits 80 mm apart are illuminated with light of wavelength 600 nm. What is the angle of the m = 3 bright fringe in radians?
查看完整题目与答案
【简答题】Light of wavelength 600 nm illuminates a diffraction grating. The second-order maximum is at angle . How many lines per millimeter does this grating have?
查看完整题目与答案
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