对测量线路而言,静电场既可引起测量数值的改变,造成较大(),也可引起测量示值不稳定
A、误差
B、偏差
C、电容
D、电阻
参考答案:A
根据句意及单词首字母提示完成句子。
1. The thief who stole the woman's wallet was caught and thrown into a p______ at last.
2. There will be an important c______ in the meeting room this afternoon. Don't be late.
3. He is so t______ that he has to stop and have something to drink.
4. My computer can't work. Will you please help me m______ it?
5. Because of traveling in space, the two astronauts, Fei Junlong and Nie Haisheng were p______
by all the people in China.
某升降机沿竖直方向运动的速度v随时间t的变化关系图象如图所示,已知t1-t2过程的图线平行于t轴,t3-t2>t1,则( )
A.0~t1过程比t2~t3过程运动的加速度小
B.0~t1过程比t2~t3过程运动的位移大
C.0~t1过程比t2~t3过程运动的方向相反
D.0~t1过程比t1~t3过程运动的平均速度小