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【简答题】
如图所示,在梯形ABCD中,已知AB∥CD, AD⊥DB,AD=DC=CB,AB=4,以AB所在直线为x轴,过D且垂直于AB的直线为y轴,建立平面直角坐标系。 (1)求∠DAB的度数及A、D、C三点的坐标; (2)求过A、D、C三点的抛物线的解析式及其对称轴L; (3)若P是抛物线的对称轴L上的点,那么使△PDB为等腰三角形的点P有几个?(不必求点P的坐标,只需说明理由)
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举一反三
【单选题】提出“不愤不启,不悱不发”,重视启发教学的教育家是()。
A.
孔子
B.
孟子
C.
荀子
D.
朱熹
【判断题】Battery is the tort of intentionally causing harmful or offensive contact with another.
A.
正确
B.
错误
【简答题】提出“不愤不启,不悱不发”,重视启发教学的教育家是我国的____。
【简答题】中外教育家都很重视启发式教学。孔子提出了“不愤不启,不悱不发”的著名教学要求,这是“启发”一词的来源。
【单选题】下列对于胸痛的叙述,不正确的是
A.
带状疱疹患侧剧痛
B.
心绞痛多压榨样疼痛
C.
腹腔脏器病变也可以引起胸痛
D.
疼痛程度与病情轻重无关
【多选题】下列关于胸痛性质的叙述,不正确的是( )
A.
干性胸膜炎呈尖锐刺痛
B.
食管炎多为烧灼痛
C.
神经官能症可呈针刺样痛
D.
肺癌常为绞窄样痛
E.
带状疱疹呈刀割样痛
【单选题】下列关于主诉的叙述,正确的是
A.
咽痛、发热
B.
活动后心悸、气促10天,下肢水肿2天
C.
头昏头痛数年
D.
患糖尿病1年
E.
畏寒、发热、右胸痛、咳嗽、食欲不振、头昏、乏力3天
【单选题】As a joke, and intending only to frighten his golf companion B, A swings a golf club at B ’ s head, but stops his swing when the head of the club is still six inches from B ’ s head. Nevertheless, due...
A.
A cannot be liable for an assault since the injury was an accident.
B.
A cannot be liable for a battery.
C.
A intended to cause apprehension and that intent will suffice.
D.
If the head of the club had not flown off, no tort would have been committed.
【单选题】An ( ) is the act of inflicting physical harm or unwanted physical contact upon a person or, in some specific legal definitions, a threat or attempt to commit such an action. It is both a crime and a ...
A.
battery
B.
aggression
C.
assault
D.
attack
【判断题】It’s not enough to constitute the battery in American Tort Law, if there is no actually physical touch?
A.
正确
B.
错误
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