There was a sign near the entrance _____ the library. [ ]
A. to
B. of
C. in
D. at
A
癃闭属中气不足者的表现是()
A.小便点滴不爽,排出无力,面色白,神气怯弱,畏寒肢冷,腰膝酸软,舌淡苔白,脉沉细弱
B.小腹坠胀,时欲小便而不得出,精神疲惫,食欲不振,气短声低,舌淡,脉虚弱
C.小便淋漓不尽,时做时止,遇劳即发,神疲无力,腰膝酸软,舌质淡,脉弱细
D.小腹坠胀,尿有余沥,面色白,舌质淡,脉虚无力
E.小便涩滞,淋漓不尽,少腹满痛,舌质薄,脉沉弦
抱杆支立在松软土质处时,其根部应有防沉措施。抱杆支立在()的地面上时,其根部应有防滑措施。
A.坚硬或冰雪冻结
B.冰雪冻结
C.松软
D.碎石