A typical example of "create the wants it sought to satisfy" is ______.
A.acquiring things they most certainly did not need
B.transforming the plain telephone into a luxury
C.fifteen phones as the style. for a wealthy home
D.buying all the telephones that they can conveniently use
第5题
下列材料中,不属于有机材料的是()。
A.沥青、天然漆
B.石棉、菱苦土
C.橡胶、玻璃钢
D.塑料、硬杂木
第6题
下列材料中,不属于各向同性材料的有()
(A)钢材;
(B)塑料;
(C)浇铸很好的混凝土;
(D)松木。
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