肛管直肠环的组成是:() ["外括约肌皮下部、浅部、深部、提肛肌","内括约肌下缘、外括约肌浅部、深部、提肛肌","外括约肌、耻骨直肠肌、髂骨尾骨肌","内括约肌下缘、外括约肌浅部、深部,耻骨直肠肌","内括约肌下缘、外括约肌皮下部、浅部、深部"]
性动机偏离的主要类型包括()。 ["泄欲动机","性爱和情爱相统一动机","生育动机和交易动机","享乐动机"]
一度房室传导阻滞时的心电图改变是() ["QRS增宽>0.12秒","P-R间期>0.12秒","P-R间期<0.21秒","P-R间期≥0.21秒","P-R间期逐渐延长"]
下列哪种酶与心脏功能是否正常关系不大() ["AST","ALP","CK","LD","α-HBDH"]
可出现局限性淋巴结肿大的疾病是() ["淋巴结结核","传染性单核细胞增多症","系统性红斑狼疮","急性白血病","淋巴瘤"]
实践证明,先进的物流技术和先进的物流()是推动现代物流迅速发展的两个车轮,二者缺一不可。