【单选题】The change-over of roles in the family probably shows that ______.
A.
it is now a usual practice in modern life
B.
it is a departure from the traditional notion that men and women are equal
C.
men have the capacity for household affairs
D.
women are not necessarily inferior to men
【判断题】用圆弧规测量圆弧时,圆弧规与工件轴线应在同一条平内。
【单选题】当堑到离尽头()mm左右时,必须调头再錾去余下部分
【单选题】影响土地经济生产潜力的人工控制不包括()
B.
作物栽培技术和化肥、农药、有机肥等物质投入。
【单选题】在我国,引起慢性肺源性心脏病最常见的原因是
【判断题】用圆弧规测量圆弧时,圆弧规与工件轴线应在同一平内
【单选题】在我国,引起慢性肺源性心脏病最常见的原因是
【判断题】风险的本质特征就是损失的不确定性。( )