《物业管理条理》规定,在业主、业主大会选聘物业管理企业之前,建设单位选聘物业管理企业的,( )签订书面的《前期物业服务合同》。
A.应当
B.不必
C.必须
D.口头
参考答案:A
When he looked up, he suddenly found himself________by a group of teenagers, ________looked
at him anxiously.[ ]
A. to be surrounded; which
B. surrounded; who
C. be surrounded; who
D. having been surrounded; which
弃水损失电量一般分为()。
A.调峰弃水损失电量;
B.检修弃水损失电量;
C.工况约束弃水损失电量;
D.其它弃水损失电量。