装配断面形状对称的结构,如梁柱等结构,选用______装配法。
A.地样
B.立装
C.仿形复制
D.胎具
参考答案:C
--- What has become of the spaceship?
--- It landed ______.
A.safely but broken
B.safe but has broken
C.safely but was broken
D.safe but broken
下列( )数代表八进制整数。
A.0XA6
B.0144
C.1840
D.-1E3