【单选题】Standing in the wind of winter, he was shivering all over with cold.
【单选题】“ ________ my feet remain standing above the water level, there is hope... ” said the captain.
【多选题】有关细菌毒素正确提法是
B.
.外毒素主要由 G+ 菌产生,其毒性作用大致相同
D.
.外毒素对热不稳定, 60 ℃ 30 分钟可被破坏
【多选题】有关细菌毒素正确说法是()
B.
外毒素主要由G + 菌产生,其毒性作用大致相同
【单选题】I saw a man standing ___ the tree ___ a distance of twenty yards.
【判断题】G + 细菌的细胞壁结构只有一层,不含有脂多糖 ,产生内毒素 ; G - 细菌细胞壁不含有磷壁酸 ,产生外毒素 。
【判断题】外毒素只有G+菌产生,内毒素只有G-菌产生
【单选题】在多道批处理系统中,为了充分利用各种资源,系统总是优先选择( )多个作业投入运行。
【单选题】After the flood, no house in the village _________. People _________ homeless. [ ]
B.
remained standing, were left
C.
was remained standing, were left
D.
was left to stand, remain