1.

The thermal coefficient of concrete is:

A. 0.5 × 10-6 /° C - 1 × 10-6/C
B. 8 × 10-6 /° C - 10 × 10-6 /° C
C. 25 × 10-6 /° C - 20 × 10-6 /° C
D. 4.5 × 10-6 /° C - 2.5 × 10-6 /° C
E. 30 × 10-6 /° C - 35 × 10-6 /° C
Answer» C. 25 × 10-6 /° C - 20 × 10-6 /° C


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