皮皮学，免费搜题
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搜题
【多选题】
细菌外毒素的特点是A.
耐热且抗原性强
B.
均由细菌合成后分泌至胞外
C.
经甲醛处理可脱毒成类毒素
D.
引起特殊病变和临床表现
E.
引起DIC
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What should visitors do when leaving the area?
A.
Sign out.
B.
Pay an exit fee.
C.
Give the pass back.
D.
Keep the pass for future visits.
【判断题】consumer’s credit is provided by banks and other financial institutions for individual, enterprise and government、
A.
正确
B.
错误
【单选题】Is there a service fee when ______________ a ticket?
A.
buy
B.
buys
C.
buying
D.
bought
【单选题】Do you know the fee for entrance?
A.
It's free for anyone.
B.
Not at all.
C.
Thank you.
D.
Ok.
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