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可供口服的雌激素为（ ）。
Most people have no idea of the hard work and worry that gointothe collecting of those fascinating birds and animals that they pay to see in the zoo.One of the questions that is always asked of me is 1 I became an animal collector in the first 2.The answer is that I have always been interested in animals and zoos.According to my parents, the first word I was able to say with any 3 was not the conventional “mamma” or “daddy”,4 the word “zoo”, which I would 5 over and over again with a shrill 6 until someone, ingroupsto 7 me up, would take me to the zoo.When I 8 a little older, we lived in Greece and I had a great 9 of pets, ranging from owls to seahorses, and I spent all my spare time 10 the countryside in search of fresh specimens to 11 to my collection of pets.12 on I went for a year to the City Zoo, as a student 13 , to get experience of the large animals, such as lions, bears, bison and ostriches,14 were not easy to keep at home.When I left, I 15 had enough money of my own to be able to 16 my first trip and I have been going 17 ever since then.Though a collector's job is not an easy one and is full of 18 ,it is certainly a job which will appeal 19 all those who love animals and 20. 请在10处填上正确答案（）
达尔文进化和演化的思想一定程度上受到了（）的著作《地质学原理》影响。
高温型食品冷藏箱的适用温度调节范围为0~-10℃。
辫状河的二元结构特点是（）？
中国式管理的最高层级是（）
发电厂（）系统的各工作地点应有相互联系用的信号或通信设备。
下列哪种病变中没有肉芽组织的存在（ ）
关于现况调查的叙述，下列哪项是错误的（）
患者沈某患肠癌，对其进行手术治疗，手术中因医生误伤其动脉，患者需要输血，此时错误的说法是（）
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在问卷调查法中，调查人员可以通过（ ）方式，了解被调查对象的市场行为和方式。
问卷上的填表说明是给调查人员看的。
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与其他研究方法一样，问卷调查也有相应的优缺点，以下关于问卷调查的缺点的描述，正确的是（）。
问卷调查的情景因素表现为问卷调查现场的环境、条件、特点，主持人的态度行为等，这一因素又被称为（ ）。
虽然问卷调查比直接调查简短，内容上也相对简单，但“直接调查”与“问卷调查”这两个术语却不可互换使用。
问卷调查法
问卷调查法
问卷调查法