胆固醇合成过程中的限速酶是() ["HMG-CoA合酶","鲨烯合酶","HMG-CoA裂解酶","鲨烯环化酶","HMG-CoA还原酶"]
在设计地图投影方式时,呈圆形轮廓的区域宜采用()投影。 ["圆柱","圆锥","方位","多圆锥"]
人体正常菌群分布中,"耻垢杆菌"属于()A [".男性生殖器","男性尿道口","支气管和肺泡","咽喉及扁桃体黏膜","女性尿道外部与外阴部"]
患者女性,30岁。孕2产1,孕30周时行产前检查,B超示胎儿发育未见异常,腹部触诊结果示子宫底部触及圆而硬、有浮球感的胎儿部分,血压正常。针对该患者的处理措施,正确的是() ["A.给予地塞米松肌注促胎肺成熟","增加肛查次数以了解胎头是否入盆","患者待产期间发生脐带脱垂后可继续观察","破膜超过48小时后给予抗生素预防感染","破膜12~18小时后未临产可采取措施尽快结束分娩"]
治疗目赤肿痛、口舌生疮,应首选() ["A.黄连","B.酒黄连","C.姜黄连","D.萸黄连","E.黄连炭"]
汽机高低压旁炉系统具有()、()和()三项功能。