按建筑物的用途分类,建筑可分为( )。
A.砖土结构建筑、木结构建筑、钢结构建筑
B.生产性建筑、居住建筑和公共建筑
C.住宅建筑、公共建筑及综合性建筑
D.抗震建筑
参考答案:B
She brought with her three friends, none of ____ I had ever met before. [ ]
A. them
B. who
C. whom
D. these
患者,男性,50岁。需输1000ml液体,用滴系数为15的输液器,每分钟40滴,输完需用( )
A.2h 15minB.2h 45minC.4h 15minD.4h 45minE.6h 15min