THE specific polysaccharide of lipopolysaccharide is called O-antigen of bacteria.
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lipid A is specifically found in the outer membrane of cell wall of Gram positive bacterium.
A. 对
B. 错
The periplasmic space is present not only in the cell wall of Gram+ bacteium but also inthe cell wall of Gram - bacterium.
A. 对
B. 错
吸上线电缆沿地面、支柱的敷设必须密贴、牢固。埋入地下时,埋深不少于 ____mm。穿过钢轨、桥台时应采取防护措施。
在有轨道电路区段,吸上线采用截面满足要求的电缆接至____中性点连接钣(端子)。吸上线须与____密贴连接牢固。