单选题
发布日期:2021-03-22
If/may
Will/shall
Should/would
Would/should
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一个多肽可还原为两个肽段,它们的序列如下:链1为Ala-Cys-Phe-Pro-Lys-Arg-Trp-Cys-Arg- Arg- Val-Cys;链2为Cys-Tyr-Cys-Phe-Cys。当用嗜热菌蛋白酶消化原多肽(具有完整的二硫键)时可用下列各肽:(1)(Ala、Cys2、Val); (2)(Arg、Lys、Phe、Pro); (3)(Arg2、Cys2、Trp、Tyr); (4)(Cys2、Phe)。 试指出在该天然多肽中二硫键的位置。
以邓宁的国际直接投资折衷论,阐述资本国际流动的经济动机是什么?
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Obviously, “John in the Morning” is a broadcasting program that can be described by any of the following EXCEPT.
孕1产0,孕39周,不规则宫缩2d。阴道少许见红,查血压18.0/12.0kPa(145/90mmHg),尿蛋白(+),宫高35cm,腹围100cm,胎心音脐左下150次/分,胎背在左侧腹扪及,宫缩30s,间隔4min,肛查宫口容指。胎心监护出现早期减速。根据上述病情,处理不恰当的是()
用电动吸引器洗胃时每次灌入液量以多少为宜?为什么?
著名粤曲《荔枝颂》的始唱者是粤剧艺术家()。
支配下颌骨牙槽骨的为()
把人体试验分为临床性与非临床性研究并且有针对性地分别提出道德要求的最早的医德文献是()
下列各项中,在合并现金流量表中不反映的是( )。
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