【简答题】A.It is worrying to penalize the innocent majority for the minority. B.It is quite reasonable to do so for the sake of the stores. C.It is the best way to pr shop-lifting. D.It is incredible to h...
【单选题】It is one thing to locate oil, but it is quite another to ________ and transport it to the industrial centers.
【单选题】下面是某研究性学习小组对离子方程式 xR 2+ +yH + +O 2 ═mR 3+ +nH 2 O的分析研究.在下面的各种说法中错误的是( )
A.
可以根据电荷守恒,得出x与y的和一定等于m的结论
B.
可以根据原子守恒,得出x与m的数值一定相等的结论
C.
可以根据氧化还原反应中电子得失守恒,得出x的值等于4的结论
D.
可以根据氧化还原反应中各种关系,得出R 2+ 是还原剂,O 2 是氧化剂,R 3+ 是氧化产物,H 2 O是还原产物的结论
【简答题】下面各式中,是方程的在相应的括号里面画“√”. (1)x+4.7=8______ (2)3-1.4=1.6______ (3)a×2<2.4______ (4)6÷m______ (5)6一x=3______ (6)7x+8y=36______.
【简答题】What does the woman say about the man's situation? A. It is very unusual. B. It is very serious. C. It is quite common. D. It is quite difficult.
【简答题】在进行楼盖的梁、板结构平面布置时,应遵循哪些布置原则?
【单选题】It is quite necessary for a qualified teacher to have good manners and _____ knowledge.