一、反复比较,慎重选择-|||-1.若 =2times 3times 3times 5 ,=2times 3times 5times 7 ,那么A、B的最小公倍数是 () 。-|||-A.30 B.630 C.360 D.1260-|||-2.如果□ times square =12 ,那么 (square div 4)times (Delta times 2) 的积是 () 。-|||-A.24 B.36 C.96 D.6-|||-3.一个等腰三角形的两边长分别为5cm和10cm,则这个三角形的周长是 () cm。-|||-A.15 B.20 C.25 D.无法确定-|||-4.一个数的 dfrac (7)(15) 是35,它的 dfrac (2)(3) 是多少?正确列式是 () 。-|||-

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