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患者男，48岁。两天前呕血一次，柏油样大便两次。面色苍白，四肢发凉，血压下降。B超显示：肝脏大。实验室检查：全血细胞减少。患者可能的诊断是
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某上消化道大出血患者，出血停止后，饮食指导时应告诉他
Dictation: listen to the audio and fill in the blanks.[音频]Vacation Homes: Owning a Piece of ParadiseQ: Why is Baja California such a popular _____1____for vacations?A: It has coasts on the Pacific Ocean and the Sea of Cortez, so_____2____ can enjoy sea life such as dolphins, whales, and unusual fish. The mountains and _______3_____ are also excellent for hiking and sightseeing.Q: Can anyone own a home in Baja California?A: Yes. You don't have to be a Mexican citizen to own ______4_______here. Many vacation homes ______5______ people from other countries, ________6________ Canada and the United States.Q: Are there a lot of new vacation homes for sale?A: Yes. Most of Baja California's ________7______lives in the north, in cities such as Tijuana and Mexicali. Recently, though, there has been _______8_______growth in the south, especially near Cabo San Lucas and La Paz. They want to ______9_______ a lot of new houses and hotels quickly in those places.Q: Is everyone happy about the housing growth?A: No. Some people worry about _______10________to the environment as more and more people move in. Baja California is also very dry, so having enough drinking water for everyone is another concern.
挖沟槽土方房屋建筑按设计图示尺寸以基础垫层（ ）乘以挖土深度计算
沟槽底宽7m以上，基坑底面积（ ）m2以上者，按挖一般土方计算。
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