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【判断题】
用酸碱滴定法测定工业醋酸中的乙酸含量,应选择的指示剂是酚酞。A.
正确
B.
错误
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举一反三
【多选题】Which of the following statements are true regarding the Recycle Bin？（）
A.
The Recycle Bin is a physical storage area for dropped objects.
B.
The Recycle Bin is a logical container for dropped objects.
C.
The Recycle Bin stores the results of a Flashback Drop operation.
D.
The objects in the Recycle Bin are stored in the tablespace in which they were created.
【单选题】The new type of recycling plant will______.
A.
recycle only paper and rubber
B.
not recycle metals, paper or rubber
C.
recycle paper, rubber and metals
D.
not recycle steel, lead or copper
【单选题】To help recycle waste material, we can do all of the following except ________.( )
A.
creating more demand for recycled material
B.
buying products made from recycled paper, plastic and metal
C.
collecting used things such as paper, plastic and metal
D.
using recycled material only in packaging
【简答题】a wast of money
【单选题】WAST stands for ______.
A.
Western Australia Supply and Transport
B.
Webster Aptitude Standard Test
C.
Welsh Association of Sail Training
D.
White Anglo-Saxon Protestants
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