试叙述静电起电序列产生的依据或方法,为何摩擦序列会产生波动?简述减少和防止静电的方法

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问题:

试叙述静电起电序列产生的依据或方法,为何摩擦序列会产生波动?简述减少和防止静电的方法。

考点:纺织材料学纺织面料基础知识纺织面料基础知识题库
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一般天然气的爆炸极限为()。

A、1%—5%

B、4%—15%

C、6%—26%

D、8%—26%

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添加防腐剂保存食品是最好的现代食物保存方法。[ ]

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A.Collectors Club is among the biggest clubs of its kind in the country

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C.today is the last day for stamp collectors to join the club

D.members may receive a set of album pages every month

62.Where is this advertisement most probably found?

A.In a newspaper.       B.On a web page.

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新生儿早期下述哪一种细胞的功能未降低()

A.TH2细胞

B.中性粒细胞

C.巨噬细胞

D.B淋巴细胞

E.树突状细胞

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女性,21岁,高热伴牙龈肿痛1周,应用抗生素治疗无效。胸骨压痛明显,浅表淋巴结及肝脾不大。WBC3.8×109/L,HCB54g/L,PI.T20×109/L。肝功:LHD2500U/L。骨髓检查:原始细胞增多≥85%,POX阴性,PAS阴性,非特异性酯酶(+),能被NaF抑制,NAP正常

本例的诊断是()

A.急性粒细胞白血病

B.急性早幼粒细胞白血病

C.急性单核细胞白血病

D.急性淋巴细胞白血病

E.急性红白血病

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