为了防止因蜡型变形而导致铸件变形,在蜡的选择上应该特别注意()。
A.蜡的形状
B.蜡的流动性
C.蜡的热膨胀率
D.蜡的韧性
E.蜡的脆性
参考答案:C
The old buildings blend with the new ones in perfect()so a walk along Nanking Road is an enjoyable discovery.
A.control
B.order
C.harmony
D.action