我国煤层气资源十分丰富，其中大多数资源量分布在( )。
A．中部、西部地
B．中部、东部地区
C．西部地区
D．陕西、山西、宁夏、内蒙古地区
参考答案：B
如图所示：R1=10欧，R2=5欧，当S闭合时，安培表A1和A2的示数之比为______．
Also when you write your goals in a particular way you are able to make yourself continuously ______ situations that will bring you nearer to your goal.
A．aware of
B．worried about
C．familiar with
D．accustomed to
