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【单选题】
目前s7-200系列的PLC有五种不同配置的品种,即CPU221、CPU222、()、CPU224XP和CPU226A.
CPU227
B.
CPU221XP
C.
CPU224
D.
CPU228
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反馈参考答案：
举一反三
【单选题】The librarian is arranging the books, which are not in their proper ____.
A.
line
B.
turn
C.
row
D.
order
【多选题】对《新修本草》的正确描述为
A.
我国最早的一部具有国家药典性质的本草
B.
世界上最早的一部具有药典性质的本草
C.
收载药物850种
D.
又称《唐本草》
E.
出现图文鉴定的方法
【多选题】（多选）If the book is in the library, what might the librarian say?
A.
“This book has been checked out.”
B.
“This book is on the shelf.”
C.
“We have this book in our stack.”
D.
“This book is in circulation now.”
【多选题】If the book is in the library, what might the librarian say?
A.
“This book has been checked out.”
B.
“This book is on the shelf.”
C.
“We have this book in our stack.”
D.
“This book is in circulation now.”
【多选题】(多选)If the book is in the library, what might the librarian say?
A.
“This book is on the shelf.”
B.
“This book has been checked out.”
C.
“This book is in circulation now.”
D.
“We have this book in our stack.”
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