题目内容
关于连续梁、板受力特点的说法，正确的是（）。
2021-09-28
A.跨中有正弯矩，支座有正弯矩
B.跨中有正弯矩，支座有负弯矩
C.跨中有负弯矩，支座有正弯矩
D.跨中有负弯矩，支座有负弯矩
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