变压器的漏抗压降是阻抗电压的（），它是由原，副绕组的漏电抗产生的，漏电抗的大小与绕组的排列方式有直接关系，为了减少漏抗，一般电力变压器的原，副绕组都采用（）结构。
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You connect your computer to a multimedia projector. When you play a video， you cannot hear the audio. You need to ensure that the projector provides audio and video playback. What should you do？（）
A. Configure the computer to use the default sound scheme.
B. Enable the Presentation Settings option. Adjust the volume settings as appropriate.
C. In the Line In Properties dialog box， clear the Allow applications to take exclusive control of this device check box.
D. In the Presentation settings dialog box， select the I always give a presentation when I use this display configuration check box.
GNSS阿平著处理不包括（）。
A. 基线冈量提墩
B. 三维无约束平差
C. 约束平差
D. 观测记录分析
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