2.1g镁铝合金完全溶于足量的盐酸,生成氢气2.24L(标况),再向溶液中加入氢氧化钠溶液,生成沉淀的质量最大是
A.2.9g
B.4.6g
C.5.5g
D.6.9g
答案:C
Look! The shop is _____. It _____ at eight o'clock every day.[ ]
A. closes, opens
B. closed, opens
C. closes, to opened
D. closed, is opened
患者,女,28岁。反复胃脘疼痛伴泛酸1年。现症见胃脘灼热作痛,痛势急迫拒按,泛酸嘈杂,心烦易怒,口干口苦。舌红苔黄,脉弦数。查体:剑突下压痛,无反跳痛及肌紧张,胃镜示:慢性浅表性胃炎。其证型是()
A.饮食停滞证
B.肝气犯胃证
C.瘀血停滞证
D.胃阴不足证
E.肝胃积热证