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【简答题】
一负载的复阻抗为 Z =4 - j3 Ω,接于 220 V交流电源上,这是 性电路,通过的电流为 A ,消耗的功率为 KW ,无功功率为 KVar 。 (保留二位小数)
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参考答案：
举一反三
【单选题】A 2-year-old boy came to the doctor due to systemic convulsions with acute upper respiratory tract infection, T39 °C, in order to determine the cause of convulsions, you should focus on which aspects...
A.
History of birth
B.
feeding history
C.
allergic history
D.
Family history
E.
past seizures history
查看完整题目与答案
【单选题】Determine the upper limit of Ra for the surface marked with 2. (Single option: 10 points )
A.
3.2μm
B.
1.6μm
C.
25μm
D.
None
查看完整题目与答案
【单选题】About a fillister cap screw joint, the nominal diameter of the screw is 10mm and the upper part thickness with straight through hole is 10mm, in addition, the lower part with blind threaded hole is ca...
A.
25mm
B.
35mm
C.
38mm
D.
None
查看完整题目与答案
【判断题】对于电机控制器,为了避免散热不均匀,对内部功率器件产生影响,一般采用垂直的安装方式。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Determine the roughness upper limit for the finest surface of the drawing. (Single option: 10 points)
A.
1.6μm
B.
3.2μm
C.
6.3μm
D.
None
查看完整题目与答案
【单选题】Determine the upper limit of Ra for the surface marked with 1. (Single option: 10 points)
A.
1.6μm
B.
3.2μm
C.
25μm
D.
None
查看完整题目与答案
【判断题】技术选择的市场定位是指所选择的技术应用于什么细分市场、利用该技术开发的产品适合什么样的目标客户。
A.
正确
B.
错误
查看完整题目与答案
【判断题】技术选择的市场定位是指所选择的技术应用于什么细分市场、利用该技术开发的产品适合什么样的目标客户。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Determine the upper limit of Ra for the surface 1. (Single option: 10 points)
A.
25μm
B.
12.5μm
C.
6.3μm
D.
None
查看完整题目与答案
【单选题】On condition of infrequently disassembling and light load, determine the type of threaded fasteners used to fasten the upper part with through holes and the lower part with threaded holes. (Single opt...
A.
Stud joint
B.
Screw joint
C.
Bolt joint
D.
None
查看完整题目与答案
相关题目：
【单选题】A 2-year-old boy came to the doctor due to systemic convulsions with acute upper respiratory tract infection, T39 °C, in order to determine the cause of convulsions, you should focus on which aspects...
A.
History of birth
B.
feeding history
C.
allergic history
D.
Family history
E.
past seizures history
查看完整题目与答案
【单选题】Determine the upper limit of Ra for the surface marked with 2. (Single option: 10 points )
A.
3.2μm
B.
1.6μm
C.
25μm
D.
None
查看完整题目与答案
【单选题】About a fillister cap screw joint, the nominal diameter of the screw is 10mm and the upper part thickness with straight through hole is 10mm, in addition, the lower part with blind threaded hole is ca...
A.
25mm
B.
35mm
C.
38mm
D.
None
查看完整题目与答案
【判断题】对于电机控制器,为了避免散热不均匀,对内部功率器件产生影响,一般采用垂直的安装方式。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Determine the roughness upper limit for the finest surface of the drawing. (Single option: 10 points)
A.
1.6μm
B.
3.2μm
C.
6.3μm
D.
None
查看完整题目与答案
【单选题】Determine the upper limit of Ra for the surface marked with 1. (Single option: 10 points)
A.
1.6μm
B.
3.2μm
C.
25μm
D.
None
查看完整题目与答案
【判断题】技术选择的市场定位是指所选择的技术应用于什么细分市场、利用该技术开发的产品适合什么样的目标客户。
A.
正确
B.
错误
查看完整题目与答案
【判断题】技术选择的市场定位是指所选择的技术应用于什么细分市场、利用该技术开发的产品适合什么样的目标客户。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Determine the upper limit of Ra for the surface 1. (Single option: 10 points)
A.
25μm
B.
12.5μm
C.
6.3μm
D.
None
查看完整题目与答案
【单选题】On condition of infrequently disassembling and light load, determine the type of threaded fasteners used to fasten the upper part with through holes and the lower part with threaded holes. (Single opt...
A.
Stud joint
B.
Screw joint
C.
Bolt joint
D.
None
查看完整题目与答案
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