物业管理最主要的特点是( )。
A.社会化
B.专业化
C.市场化
D.公开化
参考答案:C
In doing scientific experiments one must be _______ careful with the instruments.
A.other than
B.rather than
C.less than
D.more than
L8AS—12.5型压缩机限定运行各级最高排气温度为()。
A.90℃
B.110℃
C.130℃
D.150℃