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【简答题】
如图,在平面直角坐标系中,点A、B分别在x轴、y轴的正半轴上,点B的坐标是(0,7),且AB=25.△AOB绕某点旋转180º后,点C(36,9)是点B的对应点. (1)求出△AOB的面积; (2)写出旋转中心的坐标; (3)作出△AOB旋转后的三角形.
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参考答案:
举一反三
【判断题】按照我国《婚姻法》和《普通高等学校学生管理规定》的相关要求:在校大学生均不可以结婚。
A.
正确
B.
错误
【单选题】Indications of ()are loss in power and irregular running of the engine, high exhaust temperatures of corresponding unite, high local temperature in scavenge trunk, surging of turbocharger, and sparks ...
A.
a crankcase explosion
B.
a scavenge fire
C.
abnormal compression ratio
【多选题】新版《普通高等学校学生管理规定》规定,学生入学后,学校应当在3个月内按照国家招生规定进行复查。复查内容主要包括()。
A.
录取手续及程序等是否合乎国家招生规定;
B.
所获得的录取资格是否真实、合乎相关规定;
C.
本人及身份证明与录取通知、考生档案等是否一致;
D.
身心健康状况是否符合报考专业或者专业类别体检要求,能否保证在校正常学习、生活;
【单选题】下列不属于化学键的是
A.
离子键
B.
共价键
C.
氢键
D.
金属键
【单选题】If scavenge box should be hot, ()would occur.
A.
seized piston
B.
defective atomizer
C.
scavenge fire
D.
too much LO
【单选题】Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from ().
A.
exhaust valves
B.
starting valves
C.
fuel valves
D.
the indicator cocks
【单选题】下列不属于化学键的是
A.
非极性共价键
B.
极性共价键
C.
氢键
D.
配位键
【单选题】____ scavenge means both exhaust ports and scavenge ports are arranged to the same side.
A.
Uniflow
B.
Cross
C.
Loop
D.
Straight
【多选题】What makes a great Fashion Buyer?
A.
Be balanced between art and science
B.
Have astrong sense of numbers
C.
Draping skills
D.
Cutting technologies
【单选题】Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from the_______.
A.
exhaust valves
B.
fuel valves
C.
starting valves
D.
indicator cocks
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