【简答题】真空中一长为 L 的均匀带电细直杆 , 总电量为 Q , 试求在直杆的延长线上距杆的一端为 d 的 P 点的电场强度。
【单选题】【图片】一个长为 【图片】 的均匀带电细杆,电荷线密度 λ >0。p点在杆的延长线上,与杆右端的距离为a。试求p点处的场强。
【单选题】The picture in the advertisement showed an attractive actress playing _____, with her blouse hanging loosely to the floor. [ ]
【单选题】在一般的计算机系统中,西文字符编码一般采用:
【判断题】In Unit 8, the job recruite specified the salary in the advertisement.
【单选题】What is suggested in the advertisement?
A.
The real estate market is booming.
B.
Customers are under no obligation.
C.
Palmer Real Estate has a good reputation.
D.
Palmer Real Estate focuses on luxury properties.
【判断题】计算机中的西文字符,一般采用ASCII码编码,若已知“H”的ASCII码值为48H,则可能J的码值为50H。