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【单选题】
10mol/L二元酸的酸式盐NaHA溶液的pH为( )。(已知: =1.0 , =1.0
A.
8.00
B.
8.20
C.
8.30
D.
8.10
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参考答案：
举一反三
【单选题】保护滇池生态环境的张正祥是一位()。
A.
农民
B.
大学生
C.
退休干部
D.
环保学家
查看完整题目与答案
【单选题】The organization is badly _____ of hands. [     ]
A.
relevant
B.
donated
C.
in need
D.
dying
查看完整题目与答案
【判断题】使用密码技术不仅可以保证信息的机密性，而且可以保证信息的完整性和确定性，防止信息被篡改、伪造和假冒。()
A.
正确
B.
错误
查看完整题目与答案
【简答题】给出一段密文和凯撒密码的密钥,写出明文。 “ 恺撒密码 ” 据传是古罗撒大帝用来保护重要军情的加密系统。它是一种替代密码,通过将字母按顺序推后起 3 位起到加密作用,如将字母 A 换作字母 D ,将字母 B 换作字母 E 。据说恺撒是率先使用加密函的古代将领之一,因此这种加密方法被称为恺撒密码。 A B C D E F G H I J K L M N O P Q R S T U V W X Y...
查看完整题目与答案
【单选题】下列对石灰的特性描述正确的是( )。
A.
保水性差
B.
干燥收缩小
C.
凝结硬化慢
D.
耐水性好
查看完整题目与答案
【单选题】The need of a dying patient for company shows ______.
A.
his reluctance to part with his family
B.
his desire for communication with other people
C.
his fear of approaching death
D.
his pessimistic attitude towards his condition
查看完整题目与答案
【单选题】下列关于石灰特性描述不正确的是（）。
A.
石灰水化放出大量的热
B.
石灰是气硬性胶凝材料.
C.
石灰凝结快，强度高
D.
石灰水化时体积膨胀
查看完整题目与答案
【单选题】The Northeast Tiger is in danger of _______. [     ]
A.
dying out
B.
dying off
C.
dying of
D.
dying from
查看完整题目与答案
【单选题】The need of a dying patient for company shows ______.
A.
his fear of approaching death
B.
his reluctance to part with his family
C.
his pessimistic attitude towards his condition
D.
his desire for communication with other people
查看完整题目与答案
【单选题】The need of a dying patient for company shows ________.
A.
his fear of approaching death
B.
his reluctance to part With his family
C.
his pessimistic attitude towards his condition
D.
his desire for communication with other people
查看完整题目与答案
相关题目：
【单选题】保护滇池生态环境的张正祥是一位()。
A.
农民
B.
大学生
C.
退休干部
D.
环保学家
查看完整题目与答案
【单选题】The organization is badly _____ of hands. [     ]
A.
relevant
B.
donated
C.
in need
D.
dying
查看完整题目与答案
【判断题】使用密码技术不仅可以保证信息的机密性，而且可以保证信息的完整性和确定性，防止信息被篡改、伪造和假冒。()
A.
正确
B.
错误
查看完整题目与答案
【简答题】给出一段密文和凯撒密码的密钥,写出明文。 “ 恺撒密码 ” 据传是古罗撒大帝用来保护重要军情的加密系统。它是一种替代密码,通过将字母按顺序推后起 3 位起到加密作用,如将字母 A 换作字母 D ,将字母 B 换作字母 E 。据说恺撒是率先使用加密函的古代将领之一,因此这种加密方法被称为恺撒密码。 A B C D E F G H I J K L M N O P Q R S T U V W X Y...
查看完整题目与答案
【单选题】下列对石灰的特性描述正确的是( )。
A.
保水性差
B.
干燥收缩小
C.
凝结硬化慢
D.
耐水性好
查看完整题目与答案
【单选题】The need of a dying patient for company shows ______.
A.
his reluctance to part with his family
B.
his desire for communication with other people
C.
his fear of approaching death
D.
his pessimistic attitude towards his condition
查看完整题目与答案
【单选题】下列关于石灰特性描述不正确的是（）。
A.
石灰水化放出大量的热
B.
石灰是气硬性胶凝材料.
C.
石灰凝结快，强度高
D.
石灰水化时体积膨胀
查看完整题目与答案
【单选题】The Northeast Tiger is in danger of _______. [     ]
A.
dying out
B.
dying off
C.
dying of
D.
dying from
查看完整题目与答案
【单选题】The need of a dying patient for company shows ______.
A.
his fear of approaching death
B.
his reluctance to part with his family
C.
his pessimistic attitude towards his condition
D.
his desire for communication with other people
查看完整题目与答案
【单选题】The need of a dying patient for company shows ________.
A.
his fear of approaching death
B.
his reluctance to part With his family
C.
his pessimistic attitude towards his condition
D.
his desire for communication with other people
查看完整题目与答案
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