桥梁防洪工作必须采取得力措施,下面哪种措施不可取()。 ["要防止淤积,可不考虑冲刷","防止堵塞","疏通河道","可对河道进行截弯取直"]
炼丹术源于() ["春秋","战国","东汉","西汉"]
光伏发电站必须配有光伏发电功率预测系统,系统应具有()h短期光伏发电功率预测以及15min~4h超短期光伏发电功率预测功能。 ["0~24","0~48","0~72","0~96"]
素有“东方宝石”之称,被世界鸟类协会列为“国际保护鸟”的珍稀鸟是()。 ["鸳鸯","白鹇","褐马鸡","朱鹮"]
英语SETPOINT指() ["A、设定值","B、开关","C、按钮","D、指针"]
圆度