常温下,铁与下列酸溶液作用产生H2的是[ ]
A.浓硫酸
B.稀硫酸
C.浓硝酸
D.稀硝酸
答案:B
The _______ is just around the corner and you won't miss it.
A.bicycle's shop
B.bicycle shop
C.bicycles shop
D.bicycles' shop
易引起肉毒梭菌食物中毒的食品是()。
A、豆豉;
B、奶油蛋糕;
C、剩饭;
D、凉糕