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【单选题】
（）不属于代理行之间的控制文件。A.
密押
B.
有权签字人的签字式样
C.
代理范围
D.
印鉴
E.
费率表
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反馈参考答案：
举一反三
【简答题】__________是表音文字所没有的一种构形要素，而且各种类型都有各自的形态和书写要求。
【单选题】使得老舍从无名小卒成为名作家的是( )。
A.
《老张的哲学》《赵子曰》《二马》
B.
《骆驼祥子》《月牙儿》
C.
《四世同堂》 、《残雾》
D.
《茶馆》、《龙须沟》
【多选题】What are the functions of lysosomes?
A.
Many extracellular particles and molecules ingested by cells end up in lysosomes, which are membranous sacs of hydrolytic enzymes that carry out the controlled intracellular digestion of both extracellular materials and worn-out organelles.
B.
They contain about 40 types of hydrolytic enzymes, including those that degrade proteins, nucleic acids, oligosaccharides, and lipids.
C.
All of these enzymes are optimally active in the acidic conditions (pH ~5) maintained within lysosomes.
D.
The membrane of the lysosome normally keeps these destructive enzymes out of the cytosol (whose pH is about 7.2), but the enzymes’ acid dependence protects the contents of the cytosol against damage should some of them escape.
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