我国成人钼的适宜摄入量(AI)为() ["6μg/d","60μg/d","100μg/d","150μg/d","1000μg/d"]
风机的滤网应当定期清理,可以使用()清理。 ["A、汽油","B、煤油","C、柴油","D、0.5%氢氧化钠热水"]
杜加试验阳性可见于() ["肩关节脱位","肘关节脱位","Colles骨折","肱骨髁上骨折","锁骨骨折"]
影响脱水效果的因素:()。 ["A、①③","B、②③","C、①②","D、①②③"]
长途行军导致第2、3跖骨骨折的原因为() ["直接暴力","间接暴力","肌肉牵拉","疲劳性骨折","病理性骨折"]
砂浆锚杆采用的砂浆强度等级、配合比要满足设计要求。锚杆孔内灌注砂浆应饱满密实。砂浆锚杆必须设置(),且与基面密贴。