采用热风采暖和空气调节的车间,其新风口应设置在空气清洁区,新鲜空气的补充量应达到()m3/(h.人)的标准规定。
A.20
B.30
C.40
D.50
参考答案:B
— You look so healthy!
— Yeah, I like eating apples. An apple a day keeps the _______ away.
A.teacher
B.worker
C.farmer
D.doctor
《最后一课》,作者______,他是______(国籍)作家,本文的体裁是______。