热原组成中致热活性最强的成分是() ["蛋白质","磷脂","脂多糖","多肽","胆固醇"]
年有365天,那么最早把一年定为365天的是哪国人?() ["中国人","埃及人","印度人"]
INMARSATCMES不能完成()功能。. ["电传通信","电话通信","中高速数据通信","传真通信"]
挡土墙后采用哪种填料时,需在墙背设置砂卵石排水层() ["A、粘性土","B、粉性土","C、砂卵石","D、碎砖烂瓦"]
NO.7信令系统采用比特填充的方法防止其他字段中出现() ["伪标志码","标志码","校验码","前项序号"]
控制系统的输出拉氏变换与输入拉氏变换在零初始条件下的比值称为()