【单选题】【消耗次数：1】
两根跨度相等的简支梁，内力相等的条件是（ ）。
①
截面面积相等
②
截面形状相同
③
材料相同
④
外荷载相同
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相关题目
【单选题】
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；
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不同，截面尺寸大有内力小
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不同，E大的内力小。
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横截面面积相等、材料不同的两等截面直杆，承受相同的轴向拉力，则两杆的( )。
①
轴力相同
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横截面上的正应力也相同
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轴力不同
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横截面上的正应力也不同
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线应变相同
随机题目
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____ of them knew about the plan because it was a secret.
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Some
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【单选题】
At this stage we cannot tell you____ you have been selected for the job or not.
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unless
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whenever
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【单选题】
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many fire equipments
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much equipment of fire
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many equipments of fire
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much fire equipment
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The city ____ its birth-rate by almost 60% in the past 20 years.
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cuts
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has been cut
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cut
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has cut
【单选题】
?There are altogether fifty students in our class, twenty____ are boys. ?
①
of them ?
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of those ?
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of whom ?
④
of whose ?
【单选题】
They have built a____.?
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bridge hundred meters ?
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bridge a hundred meters long?
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a hundred meters long bridge ?
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bridge hundred meters long?
【单选题】
—You’ve given us a wonderful Chinese dinner, Mrs Huang.—____.
①
Oh, I’m afraid I didn’t cook well
②
I’m glad you enjoyed it
③
It’s not necessary for you to say so
④
It doesn’t matter
【单选题】
2. Everyone of them ____ tired and wanted a good rest.
①
seems
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is seemed
③
was seemed
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seemed