铸造金属全冠预备时，轴面正常聚合角为（）
A.0°
B.2°～5°
C.5°～10°
D.10°～15°
E.无要求
参考答案：B
—What were you doing at this time yesterday?
—We _______ in the classroom.
A. read B. were reading C. was reading
在责任保险中，保险人的直接赔偿对象是( )。
A．受益人
B．被保险人
C．受害人
D．第三方
