There _____ some students in the classroom. [ ]
A. is
B. are
C. have
D. has
答案:B
患者,噎膈日久,服药即吐,难于下咽可先服
A.启膈散B.玉枢丹C.行军散D.增液汤E.保和丸
某基坑土质为均质黏土,地表无荷载,c=10kPa,ψ=20°,γ=19kN/m3,基坑深度为5.0m,支护结构嵌固深度为3.0m,支护结构端点处的侧向压力为()。
A.18.6kPa
B.32.6kPa
C.48.5kPa
D.60.5kPa