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孤立的自由原子是由带（）和带负电的核外电子所组成。
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that, impressed, against, at, who, with, place, catalogue, displayed, for Dear Sir or Madam, We were(1)by the selection of sweaters that were(2)on your stand(3)the Menswear Exhibition(4)was held in Chicago last month. We are a large chain of retailers and looking for a manufacturer(5)could supply us(6)a wide range of sweaters(7)the teenage market. As we usually(8)very large orders, we would expect a quantity discount in addition to a 20% trade discount off net list prices, and our terms of payment are normally 30 days bill of exchange, documents(9)payment. If these conditions interest you, and you can meet orders of over 1000 garments at one time, please send us your current(10)and price-list. We hope to hear from you soon. Yours faithfully,
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被判处拘役的犯罪分子由公安机关就近执行。()
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男45岁，慢支15年，呼吸困难突然加重一天，伴右侧胸痛。查体：发绀、桶状胸、右肺呼吸音减低，左肺散在干啰音，心浊音界缩小，剑突下可触及收缩期搏动，考虑诊断为（）
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设计要求用混合砂浆，因现场没有石灰膏，可用同标号水泥砂浆代替。（）
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曲轴的作用是（）和（）。
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正常生产中，如常顶空冷小漏油应（）。
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循环水质稳定处理指的是什么？
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世界卫生组织将青春期的年龄范围定为（）
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在不制动时，液力制动系中制动主缸与制动轮缸的油压是（）。