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如何将视口的边线隐去？
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有关转铁蛋白，错误的是（）.
Dear Sir, We are a leading dealer in waterproof garments． Our customers have expressed interest in your raincoats and enquired about their quality． Provided quality and price are satisfactory there are prospects of good sales here, but before placing a firm order we want to make a trial salE．We should be glad if you would send us, on fourteen day's approval, a selection of men's and women's raincoats． Any of the items unsold at the end of the period, and which we decide not to keep as stock, would be returned at our expense． We look forward to hearing from you soon． Yours sincerely,
选择采煤机械时应考虑哪些影响因素？
通过在分馏塔顶挥发线注入（）来减少管线和容器的腐蚀。
简述兄、姐对弟、妹有抚养义务的条件。
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工程中通常将软化系数＞（）的材料称为耐水材料。
去过几次小朋友的家，就能画出具体的路线图来，认识发展到（）阶段的儿童能做到这种程度。
连续多普勒取样线上的符号表示（）。
TENS的治疗作用()