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【简答题】
锶的原子结构示意图如图所示，其元素符号为Sr． （1）请写出图中a的数值为______． （2）你认为它可能与元素周期表中11-18号元素中______（写元素符号）的化学性质相似． （3）请写出金属锶与稀硫酸反应的化学方程式______．
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参考答案：
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【判断题】总线型网的结构简单,建网容易,但可靠性差,中心节点是网络的瓶颈,一旦出现故障则全网瘫痪。
A.
正确
B.
错误
查看完整题目与答案
【单选题】My classmates and I Chinese.
A.
am, all
B.
all, am
C.
are, all
D.
all, are
查看完整题目与答案
【单选题】【2016年】根据波特的五种竞争力分析理论,下列各项关于供应商讨价还价能力的说法中,错误的是( )。
A.
供应商提供的产品专用性程度越高,其讨价还价能力越强
B.
供应商借助互联网平台掌握的购买者转换成本信息越多,其讨价还价能力越强
C.
占市场份额80%以上的少数供应商将产品销售给较为零散的购买者时,其讨价还价能力强
D.
供应商拥有足够的资源能够进行后向一体化时,其讨价还价能力强
查看完整题目与答案
【单选题】'Do you like being married?'' Yes, but I' m not used ______ every night. '
A.
to cook
B.
cooking
C.
to cooking
D.
to have cooked
查看完整题目与答案
【单选题】I thought I was going to fail the exam，  but I succeeded ________. [     ]
A.
first of all
B.
in all
C.
at all
D.
after all
查看完整题目与答案
【判断题】5总线型网的结构简单,建网容易,但可靠性差,中心节点是网络的瓶颈,一旦出现故障则全网瘫痪。
A.
正确
B.
错误
查看完整题目与答案
【单选题】—How was the journey? —Tiring! I caught the train at the last second but all the seats . I stood all the way.
A.
had been occupied
B.
had occupied
C.
would occupy
D.
would be occupied
查看完整题目与答案
【单选题】That’s __ I can tell you.
A.
all which
B.
all what
C.
that
D.
all that
查看完整题目与答案
【单选题】I'll be working ______ tomorrow.
A.
all day
B.
the all day
C.
on the all day
D.
on all the day
查看完整题目与答案
【单选题】I am going to do ______ I can ______ him a good impression.
A.
all what, leave
B.
all, to leave
C.
all that, leave
D.
what, leave
查看完整题目与答案
相关题目：
【判断题】总线型网的结构简单,建网容易,但可靠性差,中心节点是网络的瓶颈,一旦出现故障则全网瘫痪。
A.
正确
B.
错误
查看完整题目与答案
【单选题】My classmates and I Chinese.
A.
am, all
B.
all, am
C.
are, all
D.
all, are
查看完整题目与答案
【单选题】【2016年】根据波特的五种竞争力分析理论,下列各项关于供应商讨价还价能力的说法中,错误的是( )。
A.
供应商提供的产品专用性程度越高,其讨价还价能力越强
B.
供应商借助互联网平台掌握的购买者转换成本信息越多,其讨价还价能力越强
C.
占市场份额80%以上的少数供应商将产品销售给较为零散的购买者时,其讨价还价能力强
D.
供应商拥有足够的资源能够进行后向一体化时,其讨价还价能力强
查看完整题目与答案
【单选题】'Do you like being married?'' Yes, but I' m not used ______ every night. '
A.
to cook
B.
cooking
C.
to cooking
D.
to have cooked
查看完整题目与答案
【单选题】I thought I was going to fail the exam，  but I succeeded ________. [     ]
A.
first of all
B.
in all
C.
at all
D.
after all
查看完整题目与答案
【判断题】5总线型网的结构简单,建网容易,但可靠性差,中心节点是网络的瓶颈,一旦出现故障则全网瘫痪。
A.
正确
B.
错误
查看完整题目与答案
【单选题】—How was the journey? —Tiring! I caught the train at the last second but all the seats . I stood all the way.
A.
had been occupied
B.
had occupied
C.
would occupy
D.
would be occupied
查看完整题目与答案
【单选题】That’s __ I can tell you.
A.
all which
B.
all what
C.
that
D.
all that
查看完整题目与答案
【单选题】I'll be working ______ tomorrow.
A.
all day
B.
the all day
C.
on the all day
D.
on all the day
查看完整题目与答案
【单选题】I am going to do ______ I can ______ him a good impression.
A.
all what, leave
B.
all, to leave
C.
all that, leave
D.
what, leave
查看完整题目与答案
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