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【单选题】
若空气中湿含量及温度均提高以保持相对湿度不变,则对同一湿物料,平衡含水量将( ),结合水含量将( )。正确的选择是( )。A.
不变、不变
B.
升高、升高
C.
降低、降低
D.
升高、降低
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皮皮学刷刷变学霸
举一反三
【单选题】甲午战后,由于湘、淮军的溃败,清廷开始“仿用西法,编练新军”,并在天津小站成立了以( )由为首的练兵机构,这支军队称之为北洋新军。
A.
张之洞
B.
李鸿章
C.
袁世凯
D.
刘铭传
【单选题】Students from a wide range of countries attend a professional exam: A questionnaire is sent to a selected number of students at the end of the exam which should be completed compulsorily. The samples ...
A.
Multi-stage
B.
Stratified
C.
Cluster
D.
Systematic
【单选题】Samples are provided by the buyer as the quality standard for the goods. In order to avoid future disputes over the quality of the goods, the seller usually first duplicates the samples and then sends...
A.
duplicate sample
B.
original sample
C.
counter sample
D.
sealed sample
【单选题】The samples you requested are now ( )
A.
present
B.
available
C.
accessible
D.
reliable
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