厕浴间、厨房的墙体,设置的现浇混凝土泛水宜高出楼地面至少()。
A.100mm
B.150mm
C.200mm
D.250mm
参考答案:B
The ______ in e-mail messages has affected almost every computer around the world and has caused the damage of up to US$1 billion in North America.
A.illness
B.virus
C.weakness
D.attachment
《源氏物语》和《红楼梦》的爱情故事没有相似性。