“VTEC”是哪个汽车厂家的特色技术()
A、奔驰
B、宝马
C、丰田
D、本田
参考答案:D
There are so many kinds of Mp4 in the shop. We can’t decide .
A.to buy what
B.what to buy
C.to buy which
D.which to buy
如图所示,平行板电容器的电容为C,带电荷量为Q,板间距离为d,今在离右板d/4处放一电荷q,则它所受电场力的大小为
A.
B.
C.
D.