Liu Xiang was born _____ the 13th of July,1983, in Shanghai.[ ]
A. in
B. on
C. at
答案:B
某成年男性血液检查的下列'数值中,不正常的是
A.红细胞5.0×10 12/L
B.白细胞7.0×10 12/L
C.血小板200×10 9/L
D.血红蛋白120g/L
E.血细胞比容45%
当检修设备打开,硫化亚铁便迅速与氧发生氧化自燃,生产火焰损坏设备材。