禾谷类作物共同特征是：根为须根系，茎由节和节间组成，茎基部叶腋内发生腋芽，长出后便形成（）。
设地面B、B′两点间相距80m，水准仪安置在BB′中点时，测得高差hBB=+0.228m；将水准仪移至离B点附近2-3米处，读取B点水准尺上中丝读数=1.666m，B′尺上中丝读数=1.446m，则仪器的i角为（） ["21.4″","－21.4″","20.6″","-20.6&Prime"]
可以通过命令（）配置IPv6静态邻居表项。 ["arp-staticipv6ipv6-addressmac-address","ipv6neighboripv6-addressmac-address","ipv6static-neighboripv6-addressmac-address","ipv6neighbor-staticipv6-addressmac-addre"]
BX1-34型变压器二次线圈引接端子Ⅱ1-Ⅱ3输出电压为（）V。 ["13","14","16","15"]
神经系统中枢部白质是泛指（）聚集的地方，在新鲜标本上呈白色。 ["树突","神经细胞体","神经细胞核","神经纤维"]
核移植
