氢的存在形式有（） ["氢离子","氢原子","氢化物","气团"]
《幼儿园工作规程》规定，寄宿制幼儿园每日户外活动时间不得少于（）。
简述近代报业由孕育到诞生的年代、地域和过程。手抄小报和新闻书在这一过程中的历史地位怎样？
日本专门的贵族大学叫做？（） ["早稻田大学","京都大学","皇族大学","学习院"]
As a CCNA candidate, you must have a firm understanding of the IPv6 address structure. Refer to IPv6 address, could you tell me how many bits are included in each filed?（） [" 24"," 4"," 3"," 16"]
染色体与基因的关系
