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【单选题】
下列Escherichia coli 的保藏方法,哪一种是 最有效的 方法 :A.
传代培养冰箱保藏法
B.
冷冻干燥保藏法
C.
液体石蜡覆盖保藏法
D.
沙土管保藏
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【简答题】The Huizhou style is the __________ architecture in the villages: white walls, dark tiles, horse-head gables, stone drums or mirrors and open interior courtyards are __________ features. It was the st...
【单选题】三合诊检查是指()
A.
超声、阴道窥器、腹部检查
B.
超声、阴道镜、腹部检查
C.
经腹部、阴道、直肠联合检查
D.
B超、阴道镜、直肠检查
E.
腹部、直肠、阴道镜检查
【单选题】听力原文： Since the first prehistoric artist drew the first pictures on the walls of a cave, artists have been using stone, clay, paint, jewels, metals and hundreds of other materials to tell the story of...
A.
What people used in building their houses.
B.
What people grew in the land.
C.
How people defended themselves against threats.
D.
How people fought rains and storms.
【简答题】Some time ago,an interesting discovery was made by archaeologists on the Aegean(adj.爱琴海的;n.)island of Kea.An American team explored a temple which stands in an ancient city on the promontory of Ayia I...
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