The writer and her husband went into the shop because ______.
A.they want to have their clothes washed
B.they want to buy the clothes they saw in it
C.they didn't know they went into the dry-cleaning shop
D.they liked the woman in it
第5题
配制100ml2%盐酸普鲁卡因溶液,需加入多少克氯化钠使其成等渗(1%盐酸普鲁卡因水溶液的冰点下降度为0.12,1%的氯化钠水溶液的冰点下降度为0.58)
A.0.45g
B.0.90g
C.0.48g
D.0.79g
E.0.05g
第7题
配制100ml2%盐酸普鲁卡因溶液,需加入多少克氯化钠才能使其成为等渗溶液(1%盐酸普鲁卡因水溶液的冰点下降度为0.12,1%的氯化钠水溶液的冰点下降度为0.58)
A.0.45g
B.0.90g
C.0.48g
D.0.79g
E.0.05g
第8题
配制100ml2%盐酸普鲁卡因溶液,需加入多少克氯化钠才能使其成为等渗溶液(1%盐酸普鲁卡因水溶液的冰点下降度为0.12,1%的氯化钠水溶液的冰点下降度为0.58)
A.0.45g
B.0.90g
C.0.48g
D.0.79g
E.0.05g
第9题
配制200ml0.5%盐酸普鲁卡因溶液,需加入多少克氯化钠使其成等渗液(E=0.18)
A.0.78g
B.1.46g
C.1.62g
D.3.25g
E.4.8g
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