【单选题】以下属于针对物联网安全的对策有
B.
对行业敏感信息的信源加密及完整性保护、证书及 PKI 应用实现身份鉴别
【简答题】Mary settled in Seattle, _____ she had obtained a 's degree in economics. A. since when B. by when C. since which D. by then
【判断题】温度、水、二氧化碳、氧气为直接起作用的生态因子
【单选题】The supermarket is ________ the park.
【单选题】Mary's professor had her ______ paper many times before allowing her to present it to the committee.
【简答题】肾上腺皮质由浅至深依次为 A球状带,网状带,束状带 B束状带,球状带,网状带 C球状带,束状带,网状带 D网状带,球状带,束状带