函数y=logax,y=logbx,y=logcx,y=logdx的图象如图所示,则a,b,c,d的大小顺序是( )
A:1<d<c<a<b
B:c<d<1<a<b
C:c<d<1<b<a
D:d<c<1<a<b
—I'm not good at basketball,you know.
—________.We are playing for fun. Just try and you'll see you can.( )
比例尺是地图的“三要素”之一,学会运用比例尺是获取地图信息的基础.据此回答下面两题.
使用下列简单机械费力的是( )