题目: 已知土的内摩擦角为045,滑动面上的法向应力为100Kpa,土的粘聚力100Kpa,则由库仑定律可求得抗剪强度()A.100KpaB.200KpaC.300KpaD.400Kpa 答案: 参考答案:B
题型:选择题 He _______ us that everything would go according to plan, but it turned out a failure.A.suggestedB.demandedC.orderedD.guaranteed 查看答案
题型:单项选择题 B1型题 主动脉瓣关闭不全的心脏杂音传导特点是()A.向左腋下及左肩胛下角处传导B.向胸骨下端或心尖部传导C.向上传至右侧胸骨上窝及颈部D.局限于胸骨左缘第2肋间E.局限于胸骨左缘第3、4肋间 查看答案