粗集料
IBMPC机所访问的I/O空间有（）。 ["256B","1KB","64KB","1MB"]
保障条款
Which information is carried in an OSPFv3 intra-area-prefix LSA？ （） [" IPv6 prefixes"," link-local addresses"," solicited node multicast addresses"," IPv6 prefixes and topology informatio"]
1200-1400座歌舞剧场的台口高、台口宽、主台进深依次是（）。 ["12-14m","7-8m","15-21m","6-7m","12-15m","9-12m"]
近代农业资本主义化遇到哪些困难？
