各国医学研究表明:对人体健康影响较大的常见不良行为有
A.饮食结构不合理
B.吸烟、酗酒
C.环境污染
D.精神紧张
E.缺乏运动
参考答案:A,B,C,D,E
测含有石膏和有机能质土的含水率时,烘箱的温度可采用______。
A.75℃
B.100℃
C.105℃
D.65℃
Don't say any more; we all believe the facts than your words. What you have explained doesn't make
_____. [ ]
A. sense
B. fun
C. use
D. meaning