皮皮学,免费搜题
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搜题
【单选题】
蒸馏样品时加入适量的磷酸,其目的是
A.
使溶液的酸性增强
B.
使磷酸根与挥发酸结合
C.
使结合态的挥发酸游离出来,使于蒸出
D.
提高蒸馏温度
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举一反三
【单选题】According to the speaker, what are the most important reasons for students'absence in American city schools?
A.
Illness and poor academic performance.
B.
Illness and truancy.
C.
Physical punishment and truancy.
D.
Physical punishment and poor academic performance.
【多选题】图纸折叠要求包括( )
A.
折叠时图面应则向内侧成手风琴风箱式
B.
折叠后幅化尺寸以4图为标准
C.
图签及竣工图章应露在外面
D.
图纸不能进行任何裁剪
【单选题】He greatly appreciates my assistance in his project. In other words, he is greatly ______ of my help. Anyway, he is full of _______.
A.
appreciative, appreciative
B.
appreciation, appreciation
C.
appreciative, appreciation
D.
appreciation, appreciative
【单选题】将“统筹法”和“优选法”传播到农村的田间地头及工矿企业的科学家是:
A.
B.
许国志
C.
华罗庚
D.
华罗庚和许国志
【单选题】为了提供优质服务,进行良好的推销,服务员应了解菜单上菜肴的情况,除____外。
A.
制作方法
B.
装盘要求
C.
口味特点
D.
购买价格
【多选题】图纸折叠要求包括( )。
A.
折叠时图面应则向内侧成手风琴风箱式
B.
折叠后幅化尺寸以A4图为标准
C.
图签及竣工图章应露在外面
D.
图纸不能进行任何裁剪
【单选题】生源地信用助学贷款申请提前还款,必须于当月()日前进行申请。
A.
1
B.
10
C.
20
D.
30
【单选题】He is greatly _____________  by his colleagues.
A.
consider
B.
considering
C.
considered
D.
considers
【单选题】__( )_ conclu sion
A.
ver sion
B.
gradua tion
C.
fa shion
D.
discu ssion
【简答题】19--He is greatly (consider) by his colleagues.A. considered
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