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【单选题】
用固体NaOH配制物质的量浓度溶液时，下列操作会导致溶液浓度偏高的是A.
在烧杯中溶解时，有少量液体溅出
B.
后，轻轻振荡、摇匀、静置，液面下降再加水至刻度
C.
容量瓶使用前未干燥
D.
俯视容量瓶刻度线
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皮皮学刷刷变学霸
举一反三
【单选题】_______ energy under the earth must be released in one form or another, for example, an earthquake. [ ]
A.
Accumulated
B.
Gathered
C.
Assembled
D.
Collected
【简答题】________ energy under the earth must be released in one form. or another, for example, an earthquake. A) Accumulated B) Gathered C) Assembled D) Collected
【简答题】金属间化合物的性能特点有: 、 、 。
【简答题】城镇化的一般过程或规律。
【单选题】Nuclear energy, despite its early promise a source of eleetrical power, is still under dispute____old and safe energy sources.
A.
in compared with
B.
in compared to
C.
compared with
D.
compared to
【简答题】The energy cr has made people aware of how the careless use of the earth’s energy has brought the whole world to the edge of disaster. The over-development of motor transport, with its increase of...
【简答题】______ represents the energy per unit volume of a material required to produce fracture under static conditions. A) Modulusofelasticity B) Modulusoftoughness C) Modulusofresilience D) Modulusofrigidit...
【单选题】Energy ______ under the earth must give off in one form or another, for example, an earthquake. [ ]
A.
gathering
B.
collected
C.
accumulated
D.
assembled
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