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【单选题】
关于二次函数 的图像叙述错误的是()A.
开口向上
B.
与x轴的两个交点是（1，0）和（3，0）
C.
对称轴是直线x=1
D.
顶点坐标是（1，-4）
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【简答题】现场勘查笔录经核对无误后,由勘查现场的交通警察、( )或者( )签名,拒绝签名、无法签名的,应当在现场勘查笔录上注明。
【判断题】Case: 1Source: Diamond, Jared. Guns, Germs, and Steel: The Fate of Human Societies. New York and London: W. W. Norton & Co., 1999. 159."The ways in which domesticated animals have diverged from their ...
A.
正确
B.
错误
【判断题】Case: 1Source: Diamond, Jared. Guns, Germs, and Steel: The Fate of Human Societies. New York and London: W. W. Norton & Co., 1999. 159."The ways in which domesticated animals have diverged from their ...
A.
正确
B.
错误
【判断题】Case: 1Source: Diamond, Jared. Guns, Germs, and Steel: The Fate of Human Societies. New York and London: W. W. Norton & Co., 1999. 159."The ways in which domesticated animals have diverged from their ...
A.
正确
B.
错误
【简答题】No one likes germs．You wash your hands often and avoid sick people．But some of the germiest places are in your own home where you can’t avoid them! Over 77，500 bacteria per square centimeter can live ...
【单选题】Germs that depends less on host mobility:
A.
Have more severe symptoms
B.
Are usually transmitted by water, insects, or food
C.
Include plasmodium and the rhino virus
D.
Both A & B
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