细菌细胞壁特有的成分是
A.类脂AB.脂蛋白C.脂多糖D.肽聚糖E.外膜
参考答案:D
以下对于近代中国民族资本开始多投资于纺织业原因的分析,正确的是
①可以吸收传统的手工纺织技术 ②投资者的技术实力弱
③投资者的资金比较少 ④弥补了洋务运动的空白 [ ]
A、①④
B、②③
C、①②③
D、①②③④
The little girl _______her breath in a long sigh when she learned that none of her friends let out her plan to run away from her family with her boyfriend to her parents. [ ]
A. send out
B. make out
C. let out
D. bring out