皮皮学,免费搜题
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搜题
【单选题】
当RLC串联电路发生谐振时,改变电阻R的值,则()。
A.
电感中的电流发生变化
B.
电容端电压无变化
C.
电源提供的无功功率发生变化
D.
谐振消失
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举一反三
【单选题】下列哪项不是诱发支气管哮喘发病的因素?
A.
接触过敏原
B.
呼吸系统感染
C.
气候改变
D.
精神因素
E.
长期应用皮质激素
【多选题】在通道与选区的关系中,哪些正确?
A.
如果红通道为纯黑,表示红通道没有选区
B.
通道中的白色表示有选区
C.
通道中的黑色表示没有选区
D.
通道越亮,表示选区的不透明度越高
【单选题】In spite of her parents’ disapproval, the girl decided to study ____.
A.
aboard
B.
broad
C.
board
D.
abroad
【单选题】____ with the boy’s true love for her, the girl decided to entrust her life to him.
A.
Acquired
B.
Imposed
C.
Infected
D.
Diagnosed
【判断题】When she knew that the person she was talking to was dying, the girl decided to see him in person.
A.
正确
B.
错误
【单选题】In order to get the_______ information,the girl decided to receive______ education.
A.
later;farther
B.
latest;farther
C.
latest;further
D.
later;further
【单选题】__________ by the beauty of nature , the girl decided to spent another day on the farm.
A.
Attracting
B.
Attracted
C.
To be attracted
D.
Having attracted
【单选题】The girl decided to go on a ________.
A.
food
B.
diet
C.
nutrition
D.
cook
【多选题】在通道与选区的关系中,哪些正确?
A.
通道中的白色表示有选区。
B.
通道越亮,表示选区的不透明度越高。
C.
如果红通道为纯黑,表示红通道没有选区
D.
通道中的黑色表示没有选区。
【单选题】( )by the beauty of nature, the girl decided to spend another two days on the farm.
A.
Attracting
B.
Attracted
C.
To be attracted
D.
Having attracted
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