为什么高强度弹簧钢不宜采用阴极除油?() ["易产生氢脆现象","除不干净","成本高"]
脱落酸具有()等生理功能。 ["促进休眠","促进脱落","促进气孔关闭","以上答案都不正确"]
某女,28岁,阴部干涩,灼热瘙痒,带下量少色黄,甚者血样,口干咽燥,头晕耳鸣,五心烦热。可诊为() ["湿热下注型阴痒","湿毒型阴痒","肝肾阴虚型阴痒","肾虚型阴痒","湿热型阴痒"]
3#干熄炉干熄槽有效容积为约()小时的装焦量。 ["5","6","5","3.5"]
在经济订货模型中,存货成本包括() ["采购成本","订货成本","储存成本","缺货成本"]
哥窑