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【判断题】
质点的加速度等于该质点的速度矢量对时间的导数A.
正确
B.
错误
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
【多选题】《建设工程安全生产过来条例》对违反条例的违法行为作出了一系列处罚规定。施工现场项目负责人应认真学习《建设工程安全生产过来条例》，了解和掌握有关处罚条款，搞好施工现场安全生产管理，避免受到相应处罚。问题如下：施工单位在施工现场临时搭建的建筑物不符合安全使用要求的，（）。
A.
责令限期改正
B.
逾期未改正的，处5万元以上10万元以下的罚款
C.
逾期未改正的，责令停业整顿，并处5万元以上10万元以下的罚款
D.
造成重大安全事故，构成犯罪的，对直接责任人员，依照刑法有关规定追究刑事责任
E.
造成损失的，依法承担赔偿责任
【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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