Which statement best describes the differences between Cisco SMARTnet and Cisco SMARTnet Onsite？（） [" CiscoSMARTNet Onsite includes all of the elements of Cisco SMARTnet with the additionalprovision of onsite technician to perform parts replacement"," CiscoSMARTnet Onsite is primarily attractive to customers who do not need to replace theirhardware immediately， but would still like an onsite technician to install and replace hardware"," CiscoSMARTnet Onsite includes certification classes and live network consulting at thecustomer site"," CiscoSMARTnet Onsite provides network monitoring for small-to-medium sized businesses andprovides onsite technical resources when hardware problems are detecteD"]
说明人体测量中标准坐姿、标准立姿的要求。
简述表外业务的各类及作用。
下列（）签名中，签名这的公钥对应多个私钥。 ["失败——停止签名","前向安全签名","变色龙签名","同时生效签名"]
下列法的形式中，由国家最高权机关制定，规定国家基本制作和根本任务，具有最高法律效力，属于国家根本大法的是（）。A、《中华人民共和国宪法》B、《中华人民共和中民法通则》C、《中华人民共和国刑法》D、《中华人民共和国物权法 ["《中华人民共和国宪法》","《中华人民共和中民法通则》","《中华人民共和国刑法》","《中华人民共和国物权法"]
急停按钮应安装哪些位置，选何种形式，如何安装？
