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【单选题】
下列药材中以树皮入药的为( )
A.
. 厚朴
B.
. 牡丹皮
C.
. 桑白皮
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Many young paople read the English newspaper called The 21st Century ____ improve their English.
A.
as to
B.
so that
C.
in order to
D.
in order that
查看完整题目与答案
【单选题】Many coaches and parents are in the habit of criticizing young athletes______.
A.
without realizing criticism may destroy their self confidence
B.
in order to make them remember life's lessons
C.
believing that criticism is beneficial for their early development
D.
so as to put more pressure on them
查看完整题目与答案
【简答题】学前教育机构的硬件建设和设施要符合幼儿年龄特点，符合国家规定的卫生安全标准。()
查看完整题目与答案
【多选题】“Teenager” means a person from 13 to 19 years old. Although they’re young, they have to make many important choices by themselves. Often teachers and parents cannot handle them because they don’t unde...
A.
Their teachers.
B.
Theirs parents.
C.
Their friends.
D.
Movie stars. 小题3: What does the passage mainly talk about? Everybody needs to make choices. Teenagers need to make choices by themselves. Teenagers know more about TV shows and music. Teachers and parents should help teenagers as much as possible.
查看完整题目与答案
【单选题】当变压器一次绕组通入直流时,其二次绕组的感应电动势( )。
A.
大小与匝数成正比
B.
近似于一次绕组的感应电动势
C.
大小不稳定
D.
等于零
查看完整题目与答案
【单选题】变压器主要由一次绕组、二次绕组和铁芯组成。当一次绕组加上交流电压时，铁芯中产生的（）在一次、二次绕组中感应电动势，在一次、二次绕组中每匝上感应电动势的大小是相同的，但一次、二次侧绕组的匝数不同，一次、二次侧感应电动势的大小就不同，从而实现了变压的目的，一次、二次侧感应电动势之比等于一次、二次侧匝数之比。
A.
交变磁通
B.
交变电动势
C.
交变电压
D.
交变电流
查看完整题目与答案
【单选题】变压器一次绕组通入直流时,其二次绕组的感应电动势( )。
A.
大小与匝数成正比
B.
近似于一次绕组的感应电动势
C.
大小不稳定
D.
等于零
查看完整题目与答案
【单选题】变压器中一次绕组和二次绕组感应电动势的变化与磁通的关系
A.
超前90度
B.
超前180度
C.
滞后90度
D.
滞后180度
查看完整题目与答案
【单选题】You re______understand the real meaning of love.
A.
too young to
B.
so young as to
C.
young enough to
D.
as young as to
查看完整题目与答案
【简答题】变压器空载时,二次绕组( )感应电动势;二次绕组( )磁通势;变压器中的电流是由( )决定的。
查看完整题目与答案
相关题目：
【单选题】Many young paople read the English newspaper called The 21st Century ____ improve their English.
A.
as to
B.
so that
C.
in order to
D.
in order that
查看完整题目与答案
【单选题】Many coaches and parents are in the habit of criticizing young athletes______.
A.
without realizing criticism may destroy their self confidence
B.
in order to make them remember life's lessons
C.
believing that criticism is beneficial for their early development
D.
so as to put more pressure on them
查看完整题目与答案
【简答题】学前教育机构的硬件建设和设施要符合幼儿年龄特点，符合国家规定的卫生安全标准。()
查看完整题目与答案
【多选题】“Teenager” means a person from 13 to 19 years old. Although they’re young, they have to make many important choices by themselves. Often teachers and parents cannot handle them because they don’t unde...
A.
Their teachers.
B.
Theirs parents.
C.
Their friends.
D.
Movie stars. 小题3: What does the passage mainly talk about? Everybody needs to make choices. Teenagers need to make choices by themselves. Teenagers know more about TV shows and music. Teachers and parents should help teenagers as much as possible.
查看完整题目与答案
【单选题】当变压器一次绕组通入直流时,其二次绕组的感应电动势( )。
A.
大小与匝数成正比
B.
近似于一次绕组的感应电动势
C.
大小不稳定
D.
等于零
查看完整题目与答案
【单选题】变压器主要由一次绕组、二次绕组和铁芯组成。当一次绕组加上交流电压时，铁芯中产生的（）在一次、二次绕组中感应电动势，在一次、二次绕组中每匝上感应电动势的大小是相同的，但一次、二次侧绕组的匝数不同，一次、二次侧感应电动势的大小就不同，从而实现了变压的目的，一次、二次侧感应电动势之比等于一次、二次侧匝数之比。
A.
交变磁通
B.
交变电动势
C.
交变电压
D.
交变电流
查看完整题目与答案
【单选题】变压器一次绕组通入直流时,其二次绕组的感应电动势( )。
A.
大小与匝数成正比
B.
近似于一次绕组的感应电动势
C.
大小不稳定
D.
等于零
查看完整题目与答案
【单选题】变压器中一次绕组和二次绕组感应电动势的变化与磁通的关系
A.
超前90度
B.
超前180度
C.
滞后90度
D.
滞后180度
查看完整题目与答案
【单选题】You re______understand the real meaning of love.
A.
too young to
B.
so young as to
C.
young enough to
D.
as young as to
查看完整题目与答案
【简答题】变压器空载时,二次绕组( )感应电动势;二次绕组( )磁通势;变压器中的电流是由( )决定的。
查看完整题目与答案