肝昏迷病人发生便秘时,灌肠时应禁用______
A.生理盐水 B.肥皂水 C.新霉素液 D.弱酸性溶液 E.石蜡油
参考答案:B
The importer will normally require the exporter to present shipped on board B/L, for it provides better guarantee for both negotiating bank and the consignee. ()
燃料燃烧后灰份的主要成份是()。
A.MgO
B.Al2O3
C.SiO2