房地产业是从事房地产投资、开发、经营、服务和管理的行业,它属于()。
A.建筑业,
B.第二产业
C.第三产业,
D.公用事业;
参考答案:C
Xiaohua was so careless that she a bowl yesterclay evening in the
school dining room. [ ]
A. fall
B. fell
C. drop
D. dropped
液压油粘度指数越高,温度对油品粘度变化的影响较大。