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【简答题】
X、Y、Z、L、M五种元素的原子序数依次增大。X、Y、Z、L是组成蛋白质的基础元素，M是地壳中含量最高的金属元素。回答下列问题： (1)五种元素的原子半径从大到小的顺序是____(用元素符号表示)。 (2)X与Z形成的3∶1的化合物A，它与Z的最高价氧化物对应的水化物B反应的化学方程式____，该水溶液显____性，用离子方程式解释原因____。 (3)硒是人体必需的微量元素，与L同一主族，其最高价氧化物对应的水化物化学式为____。该元素固体单质与H 2 反应生成0.5 mol气态氢化物时吸收了14.87kJ的热量，请写出1mol该物质与氢气化合的热化学方程式　。 (4)用M单质作阳极，石墨作阴极，NaHCO 3 溶液作电解液进行电解，生成难溶物R，R受热分解生成化合物Q 。写出阳极生成R的电极反应式： ；由R生成Q的化学方程式：____。
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参考答案：
举一反三
【简答题】final, finally, finalize的区别。
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【简答题】Amy Lee, a fixed income yst gathers the following table with the yields and corresponding prices for a hypothetical 10-year option-free bond which initially yields 8%: Using a 10 basis point rate ...
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【多选题】Motivationis an invisible inner state that energizes human goal-directed behavior, which determines:
A.
what goal to reach
B.
how hard the individual will work
C.
how long the individual maintais his/her effort
D.
how successful an individual is
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【单选题】Traversing a binary tree in preorder is equivalent to(68).
A.
Traversing the forest corresponding to the binary tree in root-first order
B.
Traversing the forest corresponding to the binary tree in root-last order
C.
Traversing the forest corresponding to the binary tree in breadth-first order
D.
None of the above
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【判断题】普洱茶“亮”的特性既是鉴评普洱茶品质优劣的重要指标,又是鉴赏普洱茶美的内在标志。( )
A.
正确
B.
错误
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【简答题】《阿Q正传》收录在鲁迅的小说集《 》里面。
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【多选题】Which two statements are correct about firewall filters in the Junos OS?（）
A.
Firewall filters are stateless.
B.
Firewall filters are used to control routing information that is exchanged between devices.
C.
Firewall filters are used to control traffic passing through the device.
D.
Firewall filters can only be applied to traffic entering the device.
查看完整题目与答案
【判断题】普洱茶“亮”的特性既是鉴评普洱茶品质优劣的重要指标,又是鉴赏普洱茶美的内在标志。( )
A.
正确
B.
错误
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【简答题】Depth filters collect particles mostly by both impaction and filtration.
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【单选题】以下程序的运行结果是() try: print(1/0) except: print('this is except') else: print('this is else') finally: print('this is finally')
A.
this is except this is else this is finally
B.
this is except this is finally
C.
this is else this is finally
D.
this is except this is else
查看完整题目与答案
相关题目：
【简答题】final, finally, finalize的区别。
查看完整题目与答案
【简答题】Amy Lee, a fixed income yst gathers the following table with the yields and corresponding prices for a hypothetical 10-year option-free bond which initially yields 8%: Using a 10 basis point rate ...
查看完整题目与答案
【多选题】Motivationis an invisible inner state that energizes human goal-directed behavior, which determines:
A.
what goal to reach
B.
how hard the individual will work
C.
how long the individual maintais his/her effort
D.
how successful an individual is
查看完整题目与答案
【单选题】Traversing a binary tree in preorder is equivalent to(68).
A.
Traversing the forest corresponding to the binary tree in root-first order
B.
Traversing the forest corresponding to the binary tree in root-last order
C.
Traversing the forest corresponding to the binary tree in breadth-first order
D.
None of the above
查看完整题目与答案
【判断题】普洱茶“亮”的特性既是鉴评普洱茶品质优劣的重要指标,又是鉴赏普洱茶美的内在标志。( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】《阿Q正传》收录在鲁迅的小说集《 》里面。
查看完整题目与答案
【多选题】Which two statements are correct about firewall filters in the Junos OS?（）
A.
Firewall filters are stateless.
B.
Firewall filters are used to control routing information that is exchanged between devices.
C.
Firewall filters are used to control traffic passing through the device.
D.
Firewall filters can only be applied to traffic entering the device.
查看完整题目与答案
【判断题】普洱茶“亮”的特性既是鉴评普洱茶品质优劣的重要指标,又是鉴赏普洱茶美的内在标志。( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】Depth filters collect particles mostly by both impaction and filtration.
查看完整题目与答案
【单选题】以下程序的运行结果是() try: print(1/0) except: print('this is except') else: print('this is else') finally: print('this is finally')
A.
this is except this is else this is finally
B.
this is except this is finally
C.
this is else this is finally
D.
this is except this is else
查看完整题目与答案
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