欧姆定律是表示电压、（）、电阻三者关系的基本定律.
A.电荷
B.电流
C.电势
D.电感
参考答案：B
—Would you like to go to the party tonight?
—I’d love to, but there are so many rooms _______.[ ]
A. to have painted
B. painted
C. being painted
D. to paint
采用匀速进展横道图比较法时，如果涂黑的粗线右端落在检查日期右侧，表明实际进度( )。
A．超前B．拖后C．与计划进度一致D．固定不变
