皮皮学，免费搜题
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【单选题】
河蚌的循环系统为()循环。A.
闭管式
B.
双循环
C.
开管式
D.
单循环
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皮皮学刷刷变学霸
举一反三
【简答题】Write a note of about 50 - 60 words based on the following situation: Your cousin Wang Li is going to take the college entrance examination and he feels hard to decide on his major. Write a note to hi...
【单选题】I wonder what your aim in life is.
A.
want to ask
B.
wan to doubt
C.
want to agree
D.
want to know
【单选题】—How many tourists come to visit your city every day? —I am not sure. them. [ ]
A.
Thousands
B.
Thousand of
C.
One thousand
D.
Thousands of
【单选题】下述关于肠道杆菌的致病性的表述,不对是
A.
变形杆菌为条件致病，泌尿系统感染常见
B.
克雷伯菌属为条件致病，呼吸系统感染常见
C.
大肠埃希菌条件致病，引起肠道外感染
D.
志贺菌属所致疾病为菌痢
E.
沙门菌属只能引起食物中毒
【简答题】I wan to know more about your hotel services. Where is your ( )?
【单选题】关于志贺菌属的描述,错误的是
A.
按照抗原结构可分为四个群
B.
细菌只感染粘膜上皮细胞不侵入血流
C.
可产生内毒素和外毒素
D.
所致疾病为细菌性痢疾
E.
病后可产生牢固免疫力
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