-- -- I get up at six o'clock.
A:What time do you get up?
B:Get up, please.
C:What time is it?
读法国地图,分析完成下列问题。
设集合M={x∈R|x2+x﹣6<0},N={x∈R||x﹣1|≤2}.则M∩N=( )
如图,已知一块圆心角为270°的扇形铁皮,用它作一个圆锥形的烟囱帽(接缝忽略不计),圆锥底面圆的直径是60cm,则这块扇形铁皮的半径是( )