酶的活性中心是指() ["由必需基团组成的具有一定空间构象的区域","是指结合底物但不参与反应的区域","是变构剂直接作用的区域","是重金属盐沉淀酶的结合区域","酶活性中心内的必需基团只有结合基团"]
乘车时,急刹车,右膝前方受到撞击,出现右髋剧痛,髋关节运动障碍,处于屈曲内收、内旋、畸形状态应首先选择哪种治疗方法() ["Hippocrates法","Kocher法","allis法","骨牵引","皮牵引"]
尝见嵩读《汉书》,谓嵩曰:‘何为久读此?’嵩曰:‘未熟也。’巡曰:‘吾于书读不过三遍,终身不忘也。’因诵嵩所读书,尽卷不错一字。嵩惊,以为巡偶熟此卷,因乱抽他帙以试,无不尽然。嵩又取架上诸书试以问巡,巡应口诵无疑。嵩从巡久,亦不见巡常读书也。为文章,操纸笔立书,未尝起草。初守睢阳时,士卒仅万人,城中居人户,亦且数万,巡因一见问姓名,其后无不识者。突出的这个特点与睢阳保卫战有何内在联系?
听觉感受器是() ["A.椭圆囊斑和球囊斑","B.壶腹嵴","C.螺旋器","D.血管纹","E.基底膜"]
含有维生素B2的辅酶是() ["FMN","NADP+<\/sup>","FMN+<\/sup>","CoA","NAD+<\/sup>"]
试述对蒸汽吊车锅炉的保养应注意哪几点?