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双基发射药分析硝化甘油含量时,提取用乙醚的质量好坏对其分析结果几乎没有影响。()

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更多“双基发射药分析硝化甘油含量时,提取用乙醚的质量好坏对其分析结…”相关的问题
第1题
双基发射药试样不能够用乙醚提取出来的组分是()。

A.硝化甘油

B.石墨

C.苯二甲酸二丁酯

D.中定剂

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第2题
某化工企业为生产需要,储备了汽油、硝化甘油、乙醚、乙炔、磷化钙、二氧化硫、氰化钠、氰化钾等生产原料,下列关于化学物品储存方式的说法中,正确的()。

A.仓库A存放氟化钠、二氧化硫

B.仓库B存放硝化甘油、乙炔

C.仓库C存放乙醚、磷化钙

D.仓库D存放汽油、氰化钾

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第3题
索氏提取法用乙醚作提取剂时()。

A.允许样品含少量水

B.样品应无水

C.样品不含过氧化物

D.样品应无醇

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第4题
用乙醚抽取测定脂肪含量时,要求样品()。

A.含有一定量水分

B.尽量少含有蛋白质

C.颗粒较大以防被氧化

D.经低温脱水干燥

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第5题
Year after year a dedicated Swedish chemist worked to find a substance which, when (1)____

Year after year a dedicated Swedish chemist worked to find a substance which, when (1)_____ nitroglycerine(硝化甘油), would make explosives safer to handle (2)_____ weakening their force. He had a personal (3)_____ scientific reason to pursue his search, because his (4)_____ brother had been killed when a can of nitroglycerine (5)_____ exploded. The oily liquid had been (6)_____ for so many disasters that its (7)_____ had finally been outlawed by many countries.

While (8)_____ a new formula one morning, the doctor broke a test tube and gashed(划开) his finger. He was daubing(涂搽) the (9)_____ with collodion(火棉胶), a coating solution of gun-cotton dissolved in ether-alcohol(乙醚), (10)_____ the idea struck him-mix collodion with the nitroglycerine! (11)_____ was the answer. The new mixture, (12)_____ blasting gelatine(爆胶), was not only (13)_____ safe to handle as dynamite, but it was also one-and-a-half times more powerful! In fact, so powerful (14)_____ that it paved the way for a whole new (15)_____ in construction and engineering. Mines were (16)_____, roads were built, and canals were cut at a speed once (17)_____ impossible. It had another use, also-death and destruction in warfare. Its inventor had believed that the power of his new (18)_____ would so awe the military mind that it would actually be a deterrent to war. (19)_____ it became a weapon that brought death to millions of soldiers and (20)_____.

A.mixing with

B.mixed with

C.was mixing with

D.was mixed with

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第6题
美术的双基教学是指美术的______和______。

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第7题
当TEG溶液发泡时引起净化气水含量超标,应首先采取()的措施。

A.提高循环量

B.提高再生温度

C.增加汽提气量

D.加阻泡剂

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第8题
气相色谱分析发射药中残溶是测定发射药中有机溶剂。()
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第9题
排架柱在()、()和()时均取用不同的计算长度。
排架柱在()、()和()时均取用不同的计算长度。

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第10题
枪弹结构中用于容纳发射药的是()。

A.弹头

B.底头

C.弹壳

D.弹道

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第11题
岩心座上有排气装置和密封件,起到密封药室保护药盒发射的作用。()
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