提高水泥的细度,可以产生( )影响。
A.水化速度快
B.早期强度高
C.体积收缩大
D.成本提高
参考答案:A,B,C,D
继发性免疫缺陷病的特点中错误的是()
A.暂时性免疫功能障碍
B.经治疗免疫功能可恢复正常
C.糖皮质激素可加重病情
D.大手术可诱发加重
E.骨髓移植有良效
—Can you lend me the book Gone with the Wind?
—Sorry. I returned it to the library just now. Maybe it is still ______.
A.affordable
B.acceptable
C.available
D.avoidable