α=β=γ=90°,a≠b≠c是哪种晶系的特点()
A.等轴晶系
B.四方晶系
C.三斜晶系
D.斜方晶系
参考答案:D
凯恩斯说“似乎没有强烈理由要实行国家资本主义,把社会大部分经济生活包括在政府权限之内。”对以上材料理解正确的是[ ]
A.主张国家干预经济,但也不完全排斥经济自由
B.强制推行国家资本主义
C.反对国家资本主义
D.主张完全的经济自由政策
A square countertop has a square tile inlay in the center, leaving an untiled strip of uniform width around the tile. If the ratio of the tiled area to the untiled area is 25 to 39, which of the following could be the width, in inches, of tile strip Ⅰ.1 Ⅱ.3 Ⅲ.4
A.Ⅰ only
B.Ⅱ only
C.Ⅰ and Ⅱ only
D.Ⅰ and Ⅲ only
E.(E) Ⅰ, Ⅱ, and Ⅲ