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【单选题】
同一验收批中砂浆试块抗压强度平均值必须大于或等于砂浆设计强度等级所对应的立方体抗压强度;同一验收批中砂浆试块抗压强度最小的一组平均值不小于( )砂浆设计强度等级所对应的立方体抗压强度。A.
0.75倍;
B.
0.85倍;
C.
0.65倍;
D.
0.8倍
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举一反三
【单选题】The example of the children holding hands when crossing the street in the last paragraph shows that
A.
social distance is not always needed.
B.
there is no social distance among small children.
C.
humans are different from animals in social distance.
D.
social distance is sometimes determined by outside factors.
【单选题】Go______ the street, walk _______the post office,and_______ the street, and you will see the book shop in front of you.
A.
along; pass; cross
B.
along; past; across
C.
along; past; go across
D.
on; past; go cross
【简答题】FX 2N 系列PLC的编程方式主要有三种: 、 和 。
【单选题】I was walking along the street when someone across the street waved his hand to me, as if _____ me something. [ ]
A.
telling
B.
told
C.
was telling
D.
to tell
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