A、<img width='153' height='39' src='/s/tiw/p3/UpLoadImage/2013-05-07/5f91b6dc-f8e1-4d72-8722-a953cbb1ea68.png'>
B、<img width='153' height='39' src='/s/tiw/p3/UpLoadImage/2013-05-07/88086120-6881-48da-84a5-34e462efd54b.png'>
C、<img width='153' height='40' src='/s/tiw/p3/UpLoadImage/2013-05-07/512fabc8-7185-4819-9c15-b0cbecbe3d3a.png'>
D、<img width='155' height='40' src='/s/tiw/p3/UpLoadImage/2013-05-07/fe718918-b9e8-4692-8aa5-5e6030e000cb.png'>
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试题解析
根据弯矩图可知,中心段梁截面下侧受拉,故应在截面下部配置钢筋;梁的两端处截面上侧受拉,故在梁端的截面上部配置钢筋。