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【单选题】
关于革兰阳性菌,错误的是A.
细胞壁主要成分是肽聚糖，还含有磷壁酸
B.
肽聚糖层外有脂蛋白、脂质双层及脂多糖
C.
有些革兰阳性菌能产生外毒素
D.
产芽胞的细菌都是革兰阳性菌
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反馈参考答案：
举一反三
【单选题】微血管壁受损引起水肿的主要机制是
A.
毛细血管流体静压升高
B.
淋巴回流不足以清除过多的组织液
C.
静脉端的液体静压下降
D.
组织间隙的胶体渗透压增高
E.
血管口径增大
【简答题】ASK LASKAS YOU’VE GOT QUESTIONS. SHE'S GOT ANSWERS My children go to a primary school where they are not allowed to play football in the playground for fear that a child might be hurt. Besides, now th...
【简答题】The kids at Shute Country Primary School in Devon are surprisingly quiet when it’s time to go home in the afternoon, instead of the usual shouting and running you can hear them asking each other, “ Ar...
【单选题】My brother is seven. He is_____ to go to a primary school. [ ]
A.
old enough
B.
enough old
C.
too old
D.
not old
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