图样中的图框有内、外两框，外框表示图纸边界，用（）绘制，其大小为幅面尺寸。
A、粗实线
B、细实线
C、虚线
D、点画线
参考答案：B
81. Male and female students are quite different from each other ______ the age at which they begin to develop an intellectual self-discipline.
A．with regard to
B．in the light of
C．in honor of
D．on account of
对癫痫大小发作和精神运动性发作均无疗效的药物是 （ ）
A．苯妥英钠
B．戊巴比妥
C．乙琥胺
D．丙戊酸钠
E．卡马西平
