ISO2631给出的人体对振动反应的三种感觉界限是（）、（）和（）。
（）是指该种家庭由一对配偶短暂的结合而成，所生子女属母系所有。 ["母系氏族","普那路亚家庭","对偶家庭","一夫一妻制家庭"]
Which preconfiguration task is necessary for VoiceView Express? （） ["Ensure that the authentication server URL points to Cisco Unity Express. ","Ensure that authentication server is owned by the JTAPI user on Cisco Unity Express. ","Ensure that all phones point to the authentication server URL owned by Cisco Unity Express. ","Ensure that all phones that are owned by the JTAPI user point to the authentication server URL on Cisco Unity Express."]
患者，男性，26岁，上腹部汽车撞伤4h，检查：面色苍白，四肢湿冷，血压60/40mmHg，脉率140/min。全腹轻度压痛和反跳痛，腹肌紧张，肠鸣音较弱，首先应考虑（） ["胆囊破裂，胆汁性腹膜炎","小肠破裂，弥漫性腹膜炎","严重腹壁软组织挫伤","肝、脾破裂","胰、十二指肠破裂、腹膜炎"]
弹流润滑的主要特点
压缩机喘振时，对机械有哪些危害？
