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【单选题】
现行混凝土结构设计规范(GB50010—2002)度量混凝土结构可靠性的原则是A.
用分项系数，不效率
B.
用分项系数和结构重要性系数，不效率
C.
用可靠指标β，不效率
D.
用β表示 ，并在形式上采用分项系数和结构重要性系数代替β
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【单选题】Only in this way ______ improve your spoken English．
A.
can you
B.
you can
C.
，/
D.
in
【单选题】The poster should be organized into a logical structure to __________.
A.
attract the scientists’ attention
B.
present more complex materials
C.
prevent the scientists from asking questions
D.
add more imaginary information on the poster
【单选题】The poster should be organized into a logical structure that is recognizable at a glance in order to __________.
A.
attract the scientists’ attention
B.
present more complex material
C.
prevent the scientists from asking questions
D.
add more factual information on the poster
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