【单选题】【消耗次数：1】
两根等截面连续梁，其跨度、支承和荷载作用均完全相同，但截面形状，尺寸及所用的材料不同（即两根梁的EI值不同）。如不考虑两根梁自重的影响，则两根梁的内力。（ ）
①
完全相同；
②
不同，截尺形状（即I）大的内力大；
③
不同，截面尺寸大有内力小
④
不同，E大的内力小。
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