片盘斜井开拓方式的基本特征是什么?
气滞血瘀型痛经的治疗法则是()。 ["疏肝理气,缓急止痛","养血活血,逐瘀止痛","理气活血,化瘀止痛","行气解郁,活血止痛","理气活血,调经止血"]
热水锅炉硬度应() ["0、03mmol/L","0、04mmol/L","0、6mmol/L","0、5mmol/L"]
带下病的治疗,多以哪项为主?() ["清热利湿止带","疏肝清热,燥湿止带","温肾助阳,涩精止带","健脾益气,升阳除湿","清热解毒,除湿止带"]
下列哪一参数有助于确定一组数据的稳定性?() ["PERT值","CPM","标准差","数学期望值"]
立井开拓方式有哪些类型?