居民用户电费计算公式=电能表计量的有功电量³单价+集资电价+代征地方附加费。
参考答案:对
As is known to all, the work of a teacher, which is demanding, requires _________ care and patience.
A.considerable
B.accessible
C.available
D.acceptable
B公司加强对零售商和经销商的控制属于( )一体化。
A.后向
B.前向
C.横向
D.专业