【判断题】可互相发生作用的药品不能混放,必须隔离存放。易燃物、易爆物及强氧化剂只能少量存放。()
【单选题】We are going to play __________________.
A.
the tennis in an afternoon
B.
tennis in the afternoon
C.
tennis in an afternoon.
D.
the tennis in the afternoon
【单选题】We are going to play basketb all _____ Sunday. [ ]
【判断题】把 0 . 9 改写成三位小数是 0 . 009 。
【单选题】We are going to play _____ guitar next Saturday. [ ]
【简答题】如何存放和使用有毒性及易燃、易爆的药品?
【简答题】表达式求值时,既要考虑运算符的优先级,也要考虑运算符的__________。
【单选题】下列化学药品保存方法中不符合要求的是 [ ]