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【简答题】
如图所示的电路中,电阻R 1 =9Ω,R 2 =15Ω,电源的电动势E=12V,内电阻r=1Ω,的读数I=0.4A。 求:(1)、流过电阻R 1 的电流是多少?(2)、电阻R 3 的阻值是多大?(3)、电阻R 3 消耗的电功率是多少?
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举一反三
【判断题】Autumn is also named fall.
A.
正确
B.
错误
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【判断题】微机工作时,因某种原因死机重新启动后,计算机中的原有信息会全部丢失。
A.
正确
B.
错误
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【单选题】The shop stays open till seven o'clock.
A.
S+V+P
B.
S+V
C.
S+V+O
D.
S+V+O+O
E.
S+V+O+C
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【单选题】The other forms of folktales are also widespread throughout the world. Animal tales fall into two major categories: those, such as the trickster tale, in which animals are actually believed to have th...
A.
Tales in the medieval beast cycles.
B.
Tall tales.
C.
The trickster tale.
D.
The Brer Rabbit stories.
查看完整题目与答案
【单选题】第二产程心脏负担最重是由于
A.
腹压加大，内脏血液涌向心脏
B.
周围阻力更为增高
C.
心排血量及平均动脉压增高
D.
肺循环压力增高
E.
以上说法都正确
查看完整题目与答案
【多选题】隧道按照断面形状可以分为哪几种隧道？
A.
圆形隧道
B.
矩形隧道
C.
马蹄形隧道
D.
方形隧道
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【判断题】The nucleus, also known as nuclear syllable or tonic syllable, the syllable that bears the nuclear tone (a fall, rise, fall-rise or rise-fall).
A.
正确
B.
错误
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【单选题】PDI准备:、操作汽车举升机时,清理附近的物品及人员,检查举升机操作手柄和其他( )是否有效,如有发现不正常的地方应该及时找专业人员进行维修。
A.
支撑点
B.
开关
C.
设施
D.
线路
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【判断题】所谓情景整合，就是参加企业的一系列的活动，以了解企业中的各种职业，形成职业的备选项。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Yet with economies in free fall, managers also need up-to-date information about what is happening to their businesses, so that they can change course rapidly if necessary. Cisco, an American network-...
A.
It will keep a record of the orders from sales teams.
B.
It cut ＄1 billion cost by solely relying on its own technologies.
C.
Unlike other technology companies, its financial reports are encouraging.
D.
Only employees can use the video-conferencing to pass information.
查看完整题目与答案
相关题目：
【判断题】Autumn is also named fall.
A.
正确
B.
错误
查看完整题目与答案
【判断题】微机工作时,因某种原因死机重新启动后,计算机中的原有信息会全部丢失。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The shop stays open till seven o'clock.
A.
S+V+P
B.
S+V
C.
S+V+O
D.
S+V+O+O
E.
S+V+O+C
查看完整题目与答案
【单选题】The other forms of folktales are also widespread throughout the world. Animal tales fall into two major categories: those, such as the trickster tale, in which animals are actually believed to have th...
A.
Tales in the medieval beast cycles.
B.
Tall tales.
C.
The trickster tale.
D.
The Brer Rabbit stories.
查看完整题目与答案
【单选题】第二产程心脏负担最重是由于
A.
腹压加大，内脏血液涌向心脏
B.
周围阻力更为增高
C.
心排血量及平均动脉压增高
D.
肺循环压力增高
E.
以上说法都正确
查看完整题目与答案
【多选题】隧道按照断面形状可以分为哪几种隧道？
A.
圆形隧道
B.
矩形隧道
C.
马蹄形隧道
D.
方形隧道
查看完整题目与答案
【判断题】The nucleus, also known as nuclear syllable or tonic syllable, the syllable that bears the nuclear tone (a fall, rise, fall-rise or rise-fall).
A.
正确
B.
错误
查看完整题目与答案
【单选题】PDI准备:、操作汽车举升机时,清理附近的物品及人员,检查举升机操作手柄和其他( )是否有效,如有发现不正常的地方应该及时找专业人员进行维修。
A.
支撑点
B.
开关
C.
设施
D.
线路
查看完整题目与答案
【判断题】所谓情景整合，就是参加企业的一系列的活动，以了解企业中的各种职业，形成职业的备选项。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Yet with economies in free fall, managers also need up-to-date information about what is happening to their businesses, so that they can change course rapidly if necessary. Cisco, an American network-...
A.
It will keep a record of the orders from sales teams.
B.
It cut ＄1 billion cost by solely relying on its own technologies.
C.
Unlike other technology companies, its financial reports are encouraging.
D.
Only employees can use the video-conferencing to pass information.
查看完整题目与答案