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【多选题】
实物法编制施工图预算，采用的是（）。A.
当时当地的实际价格
B.
地区统一单位估价表中分项工料单价
C.
综合单价
D.
部分费用总和单价
E.
预算定额
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举一反三
【简答题】图所示电路原已处于稳定，t=0时换路(开关S动作如图)。求t＞0时电压u ab 的表达式。
【简答题】在塑性力学中,只考虑弹性和塑性这两种变形性质,不考虑时间的影响,比如蠕变、松弛等,加载速率也不影响变形性质,因此是()弹塑性力学。
【单选题】A composite material that has one phase in the nanoscale is called ____
A.
nanoclay
B.
nanoparticle
C.
nanocomposite
D.
nanofiber
【简答题】请翻译: A composite material is a combination of two or more chemically distinct and insoluble phases ; its properties and structural performance are superior to those of the constituents acting independ...
【单选题】Memos, letters, e-mail, fax transmissions, and organizational periodicals represent examples of ________.
A.
informal communication channels
B.
formal communication channels
C.
written communication
D.
technological communication
E.
none of the above
【判断题】A composite material is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics...
A.
正确
B.
错误
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