葡萄球菌污染食品后,在适宜条件下可繁殖产生肠毒素。( )
参考答案:对
There are a number of words in the English language that were French in ______.
A.root
B.base
C.bottom
D.origin
血淋与尿血的鉴别要点,在于()
A.属虚属实
B.在表在里
C.属寒属热
D.尿痛与不痛
E.血在尿前尿后