开挖基坑(槽)时,应符合的规定有:为防止坑壁滑塌,根据土质情况及坑(槽)深度,在坑顶两边一定距离(一般为0.8m)内不得堆放弃土,在此距离外堆土高度不应超过( ),否则,应验算边坡的稳定性。
A. 1.2m
B. 1.3m
C. 1.4m
D. 1.5m
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The last sentence of the fourth paragraph is intended to tell readers that______.
A. society's demands upon and for clean water are increasing
B. no person has the right to waste water
C. without water, there could be no life
D. everyone should be concerned about how water is used because the water a person uses will be used by future generations
当上部结构荷载很大、地基承载力不能满足设计要求时,应选择( )。
A. 条形基础
B. 独立基础
C. 整体式筏形基础
D. 桩基础
共用题干题女性,56岁,间断突发右侧面部闪电样锐痛1个月,疼痛多位于右侧上唇、鼻翼、口角、颊粘膜处,常于进食、洗脸、刷牙时发作,每次持续1~2分钟,发作间期无症状。每日发作约1~2次 本手术术后有效率一般为()
A. 70%~80%
B. 80%~85%
C. 85%~90%
D. 90%~95%
E. 95%~100%
计算支架立柱及其他支承结构构件时,均布活荷载的标准值为( )。
A. 1.0kN/m2
B. 1.2kN/m2
C. 1.4kN/m2
D. 1.6kN/m2