二级普通消防站餐厅、厨房的使用面积是()m2。
A.90~100
B.140~160
C.80~120
D.60~80
参考答案:D
The building, from _____ top visitors can enjoy a good view of Sanya, attracts hundreds of tourists every day.[ ]
A. which
B. whose
C. its
D. where
工业乙炔含有杂质(),在温度为100℃时就会自燃。
A、PH3
B、HS2
C、H2S