要进行正常视频点播,推荐的电脑配置显卡内存需().
A.4M
B.8M
C.16M
D.32M
参考答案:C
I’ll show you a store __________ you may buy all ___________ you need.
A.where; which
B.in which; that
C.which; that
D.that; that
置于水平面的物体,用弹簧秤水平地拉着作匀速直线运动时,弹簧秤的读数是0.6N;当弹簧秤读数达到2.0N时,物体的加速度为0.8m/s2 。则物体的质量是[ ]
A、2.5kg
B、1.75kg
C、0.6kg
D、1.4kg