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【判断题】
pH=2 的溶液酸度是 pH=6 的溶液酸度的 10000 倍.( )A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】The main duty of a __________ to maintain and repair facilities in the guestroom.
A.
repairman
B.
bellman
C.
porter
D.
receptionist
【单选题】The main duty of a __________ to clean the guestroom.
A.
repairman
B.
bellman
C.
housekeeper
D.
receptionist
【简答题】Section B Conversation
【单选题】The main duty of a __________ to receive guests and help them check in and check out.
A.
repairman
B.
bellman
C.
porter
D.
receptionist
【简答题】Section B Conversation
【简答题】阅读理解 Section B
【单选题】What is the main duty of the Prive Service Task Force?
A.
To make precautions against the spread of disease.
B.
To help public learn about the indicators of disease.
C.
To decide whether some medical checks are necessary.
D.
To judge if the doctors are qualified for what they do.
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