150kV的管电压产生的X线的最短波长为()。 ["0.008266nm","0.012399nm","0.020655nm","0.016532nm","0.024798nm"]
尿液经用80%饱和硫酸胺沉淀后,取上清液用试带法或氨基比林法检查阳性,应为()。 ["肌红蛋白尿","磷酸盐结石","碳酸钙结石","氨基酸尿","本周蛋白尿"]
螺杆式空压机的自动保护装置由哪些部件组成,各部件作用如何?
药物治疗癌痛最好的给药方式是()。 ["直肠给药","肌内注射","皮下注射","口服给药","吸入给药"]
“核,胡革反。”其读音为() ["hé","gé","hǘ","fà"]
影响情报检索效率的因素有哪些?