單項(xiàng)選擇題坡高在5m以內(nèi)的密實(shí)碎石土的邊坡坡度允許值為()

A.1∶0.35~1∶0.50
B.1∶0.50~1∶0.75
C.1∶0.75~1∶1.00
D.1∶1.00~1∶1.25


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1.單項(xiàng)選擇題60°彎鉤的鋼筋彎曲調(diào)整值為()

A.0.5d
B.0.85d
C.2d
D.2.5d

2.單項(xiàng)選擇題彎起角度為45°時(shí),彎起鋼筋凈長(zhǎng)=()

A.L-2c+2×0.268H′
B.L-2c+2×0.414H′
C.L-2c+2×0.577H′
D.L-2c+2×0.115H′

3.單項(xiàng)選擇題彎起角度為30°時(shí),彎起鋼筋凈長(zhǎng)=()

A.L-2c+2×0.268H′
B.L-2c+2×0.414H′
C.L-2c+2×0.577H′
D.L-2c+2×0.115H′

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