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【单选题】
属于内生殖器的结构是
A.
阴道前庭
B.
前庭大腺
C.
大阴唇
D.
小阴唇
E.
阴蒂
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参考答案：
举一反三
【单选题】欲配制pH=9．0 的缓冲溶液，应选用的物质为( )。
A.
HAc-NaAc [Ka(HAt)=1．8×10-5]
B.
NH4C1-NH3[Kb(NH3)=1．8×10-5]
C.
六次甲基四胺[Kb((CH2)6N4)=1．4×10-9]
D.
甲酸(Ka=1．0×10-4)及其盐
查看完整题目与答案
【单选题】Which of the following is NOT mentioned when Irene talked about the writing part in the project?
A.
They had some historians come and talk to English students about local history.
B.
Students could choose to write in pairs.
C.
They had a third-grade teacher to add notes to tough terminology.
D.
Stories were sent to a historian to make sure that everything was historically accurate.
查看完整题目与答案
【判断题】直链烯烃和炔烃的物理性质变化,同直链烷烃的物理性质变化规律相似,一般碳链越长,熔点、沸点越高,密度越大。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】欲配制pH=9的缓冲溶液，应选用的弱酸或弱碱的盐为( )。
A.
NH2OH(Kb=1×10-9)
B.
NH3·H2O(Kb=1×10-5)
C.
HOAc(Ka=1×10-4)
D.
HCOOH(Ka=1×10-4)
查看完整题目与答案
【多选题】王勃为“初唐四杰”之首,另三杰是()
A.
杨炯
B.
卢照邻
C.
骆宾王
D.
张若虚
E.
陈子昂
查看完整题目与答案
【多选题】王勃为“初唐四杰”之首,另三杰是( )
A.
杨炯
B.
卢照邻
C.
骆宾王
D.
张若虚
E.
陈志昂
查看完整题目与答案
【判断题】In actual writing process, we must consciously cultivate good writing habits.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to passage, it is telephone that ______.
A.
has made letter writing an art
B.
has prevented wars by avoiding written communication
C.
has made world different from what it was
D.
has caused wars by magnifying and extending human conflicts
查看完整题目与答案
【单选题】欲配制pH=9．0 的缓冲溶液，应选用的物质为()。A．HAcNaAc [Ka(HAt)=1．8×105]B．NH4C1NH3[Kb(NH3)=
A.
欲配制pH=9．0 的缓冲溶液，应选用的物质为( )。 A．HAc-NaAc [Ka(HAt)=1．8×10-5]
B.
NH4C1-NH3[Kb(NH3)=1．8×10-5]
C.
六次甲基四胺[Kb((CH2)6N4)=1．4×10-9]
D.
甲酸(Ka=1．0×10-4)及其盐
查看完整题目与答案
【多选题】王勃为“初唐四杰”之首,另三杰是( )
A.
杨炯
B.
卢照邻
C.
骆宾王
D.
王维
E.
张若虚
查看完整题目与答案
相关题目：
【单选题】欲配制pH=9．0 的缓冲溶液，应选用的物质为( )。
A.
HAc-NaAc [Ka(HAt)=1．8×10-5]
B.
NH4C1-NH3[Kb(NH3)=1．8×10-5]
C.
六次甲基四胺[Kb((CH2)6N4)=1．4×10-9]
D.
甲酸(Ka=1．0×10-4)及其盐
查看完整题目与答案
【单选题】Which of the following is NOT mentioned when Irene talked about the writing part in the project?
A.
They had some historians come and talk to English students about local history.
B.
Students could choose to write in pairs.
C.
They had a third-grade teacher to add notes to tough terminology.
D.
Stories were sent to a historian to make sure that everything was historically accurate.
查看完整题目与答案
【判断题】直链烯烃和炔烃的物理性质变化,同直链烷烃的物理性质变化规律相似,一般碳链越长,熔点、沸点越高,密度越大。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】欲配制pH=9的缓冲溶液，应选用的弱酸或弱碱的盐为( )。
A.
NH2OH(Kb=1×10-9)
B.
NH3·H2O(Kb=1×10-5)
C.
HOAc(Ka=1×10-4)
D.
HCOOH(Ka=1×10-4)
查看完整题目与答案
【多选题】王勃为“初唐四杰”之首,另三杰是()
A.
杨炯
B.
卢照邻
C.
骆宾王
D.
张若虚
E.
陈子昂
查看完整题目与答案
【多选题】王勃为“初唐四杰”之首,另三杰是( )
A.
杨炯
B.
卢照邻
C.
骆宾王
D.
张若虚
E.
陈志昂
查看完整题目与答案
【判断题】In actual writing process, we must consciously cultivate good writing habits.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to passage, it is telephone that ______.
A.
has made letter writing an art
B.
has prevented wars by avoiding written communication
C.
has made world different from what it was
D.
has caused wars by magnifying and extending human conflicts
查看完整题目与答案
【单选题】欲配制pH=9．0 的缓冲溶液，应选用的物质为()。A．HAcNaAc [Ka(HAt)=1．8×105]B．NH4C1NH3[Kb(NH3)=
A.
欲配制pH=9．0 的缓冲溶液，应选用的物质为( )。 A．HAc-NaAc [Ka(HAt)=1．8×10-5]
B.
NH4C1-NH3[Kb(NH3)=1．8×10-5]
C.
六次甲基四胺[Kb((CH2)6N4)=1．4×10-9]
D.
甲酸(Ka=1．0×10-4)及其盐
查看完整题目与答案
【多选题】王勃为“初唐四杰”之首,另三杰是( )
A.
杨炯
B.
卢照邻
C.
骆宾王
D.
王维
E.
张若虚
查看完整题目与答案
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