正确答案: B
承揽合同
题目:顾客将胶卷照相馆冲印,照相馆交给顾客一份取印单,该取印单属于()。
解析:B
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学习资料的答案和解析:
[单选题]下述符合慢性支气管炎病变的是
鳞状上皮化生
解析:48.答案:A
[考点] 慢性支气管炎
[分析] 慢性支气管炎病变包括支气管粘膜上皮变性坏死,腺体肥大、分泌亢进,软骨变性、钙化,慢性炎细胞浸润,鳞状上皮化生。肉芽肿形成、瘢痕形成、异物巨细胞形成、软骨增生均不属于慢性支气管炎病变。
[单选题]Which of the following statements can best be inferred from the passage?
Researches are now being made to study the significance of fish sounds.
解析:答案为 B。根据第一段第二至第五句, Actually, their talk may be as meaningful as much of our own.For example,some sea animals use their "voices" to locate their food in the ocean expanses;others use their "voices" to let their fellows know of their locations;and still others,as a means of obtaining mates.Sometimes, "speaking" may even mean the difference between life and death to a sea animal.It appears in some cases that when a predator approaches,the prey depends on no more than the sounds it makes to escape 作出该项选择。选项 A中only不确切;选择 C和D在文中都没提到。