碎部点测量和展绘的基本原理是遵循极坐标原理。( )
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What is the English name of our colllege ?
A. Xiangtan Medicine & Health Vocational College
B. Xiangtan Medical & Health Vocational College
选我所爱,爱我所选。
A. Choose I love, love my choose.
B. Choose what I love, love my choose.
Choose what I love, love what I chose.
D. Choose what I love, love what I choose.
Why should I learn English at college?
A. To improve my study ability
B. To light my skill tree
C. To help me become more confident
在交流电路中,电阻元件上电流与电压之间的相位关系是( )。
A. 电流与电压同相
B. 电流超前电压90°
C. 电压超前电流90°
D. 无法确定