混凝土抗折强度试验采用三分点处双加荷装置,下列说法中正确的是(wêçüнbbs.3c3t.com¤c@ú¹«yã
)。wêçüнbbs.3c3t.com¤c@ú¹«yã
A. 三个加荷点wêçüнbbs.3c3t.com¤c@ú¹«yã
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B. 两个加荷点 wêçüнbbs.3c3t.com¤c@ú¹«yã
C. 两加荷点位于标距三等分处wêçüнbbs.3c3t.com¤c@ú¹«yã
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D. 两加荷点位于三等分标距处wêçüнbbs.3c3t.com¤c@ú¹«yã