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举一反三
【单选题】When using the branch current method to solve a complex circuit with b branches and n nodes (b > n), the loop voltage equation that can be writen is用支路电流法求解一个具有b条支路，n个节点（b>n）的复杂电路时，可以列出的（ ）个回路电压方程。
A.
b
B.
n-1
C.
b-（n-1）
D.
b-（n+1）
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【单选题】Which of the following best explains why a type 3 filter was selected for experiments 2 and 3?
A.
The frequency response varied more widely when filter type 3 was used than when either Filter type 1 or Filter type 2 was used.
B.
Filter type 3 contains a ground and was therefore the safest of the three types of filters to experiment with.
C.
Filter type 3 is the only one among the three that contains an inductor.
D.
Input voltage could be more easily regulated using a type 3 filter than using either a type 1 or type 2 filter.
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【单选题】消除应力时,( )的说法是正确的
A.
加热不能超过200℃,然后要用水冷却
B.
可以在折叠比较严重的部位加热
C.
可以加热到600℃,但不能超过3 min
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【单选题】(26〜27题共用题干)男,55岁。慢性乙型肝炎病史15年,乏力,间断下肢水肿5年。腹泻4天,发热、腹胀、尿少3天。查体:全腹压痛,移动性浊音阳性。最可能的诊断是
A.
急性细菌性痢疾
B.
急性肾衰竭
C.
结核性腹膜炎
D.
自发性腹膜炎
E.
肝癌
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【单选题】For the circuit, using ideal diode model, what is the voltage u when t=1.5π?
A.
0
B.
5
C.
10
D.
15
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【单选题】择期手术前禁食禁饮时间是( )
A.
禁食4小时、禁饮2小时
B.
禁食8小时、禁饮3小时
C.
禁食12小时、禁饮4小时
D.
禁食6小时、禁饮1小时
E.
禁食24小时、禁饮1小时
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【简答题】四1 公路运输是指以公路为运输路线主要利用( )等陆路运输工具,进行跨地区或跨国的移动,以完成货物位移的运输方式
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【单选题】When paralleling two alternators using three synchronizing lamps, the flickering of all three lamps becomes progressively slower and slower. This means the _______.
A.
frequency of the incoming generator is approaching that of the bus
B.
frequency of the incoming alternator is less than that of the bus
C.
phase rotation of the incoming alternators is opposite to that of the bus
D.
terminal voltage of the incoming alternator is approaching that of the bus
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【单选题】When paralleling two alternators using three synchronizing lamps, the flickering of all three lamps becomes progressively slower. This means the_______.
A.
frequency of the incoming generator is approaching that of the bus
B.
frequency of the incoming alternator is less than that of the bus
C.
phase rotation of the incoming alternators is opposite to that of the bus
D.
terminal voltage of the incoming alternator is approaching that of the bus
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【单选题】For the circuit shown in the following figure, using the ideal diode model, what is the voltage v across the resistor R when t=1.5π？【图片】
A.
0V
B.
5V
C.
10V
D.
-10V
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相关题目：
【单选题】When using the branch current method to solve a complex circuit with b branches and n nodes (b > n), the loop voltage equation that can be writen is用支路电流法求解一个具有b条支路，n个节点（b>n）的复杂电路时，可以列出的（ ）个回路电压方程。
A.
b
B.
n-1
C.
b-（n-1）
D.
b-（n+1）
查看完整题目与答案
【单选题】Which of the following best explains why a type 3 filter was selected for experiments 2 and 3?
A.
The frequency response varied more widely when filter type 3 was used than when either Filter type 1 or Filter type 2 was used.
B.
Filter type 3 contains a ground and was therefore the safest of the three types of filters to experiment with.
C.
Filter type 3 is the only one among the three that contains an inductor.
D.
Input voltage could be more easily regulated using a type 3 filter than using either a type 1 or type 2 filter.
查看完整题目与答案
【单选题】消除应力时,( )的说法是正确的
A.
加热不能超过200℃,然后要用水冷却
B.
可以在折叠比较严重的部位加热
C.
可以加热到600℃,但不能超过3 min
查看完整题目与答案
【单选题】(26〜27题共用题干)男,55岁。慢性乙型肝炎病史15年,乏力,间断下肢水肿5年。腹泻4天,发热、腹胀、尿少3天。查体:全腹压痛,移动性浊音阳性。最可能的诊断是
A.
急性细菌性痢疾
B.
急性肾衰竭
C.
结核性腹膜炎
D.
自发性腹膜炎
E.
肝癌
查看完整题目与答案
【单选题】For the circuit, using ideal diode model, what is the voltage u when t=1.5π?
A.
0
B.
5
C.
10
D.
15
查看完整题目与答案
【单选题】择期手术前禁食禁饮时间是( )
A.
禁食4小时、禁饮2小时
B.
禁食8小时、禁饮3小时
C.
禁食12小时、禁饮4小时
D.
禁食6小时、禁饮1小时
E.
禁食24小时、禁饮1小时
查看完整题目与答案
【简答题】四1 公路运输是指以公路为运输路线主要利用( )等陆路运输工具,进行跨地区或跨国的移动,以完成货物位移的运输方式
查看完整题目与答案
【单选题】When paralleling two alternators using three synchronizing lamps, the flickering of all three lamps becomes progressively slower and slower. This means the _______.
A.
frequency of the incoming generator is approaching that of the bus
B.
frequency of the incoming alternator is less than that of the bus
C.
phase rotation of the incoming alternators is opposite to that of the bus
D.
terminal voltage of the incoming alternator is approaching that of the bus
查看完整题目与答案
【单选题】When paralleling two alternators using three synchronizing lamps, the flickering of all three lamps becomes progressively slower. This means the_______.
A.
frequency of the incoming generator is approaching that of the bus
B.
frequency of the incoming alternator is less than that of the bus
C.
phase rotation of the incoming alternators is opposite to that of the bus
D.
terminal voltage of the incoming alternator is approaching that of the bus
查看完整题目与答案
【单选题】For the circuit shown in the following figure, using the ideal diode model, what is the voltage v across the resistor R when t=1.5π？【图片】
A.
0V
B.
5V
C.
10V
D.
-10V
查看完整题目与答案
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