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题目：
单选题
A灯具是耐高温材料制造的
B灯具可以安装在易燃物表面
C灯具可以使用在高温环境
D灯具的安装是插拔式结构
答案：
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患者，男性，5岁。右膝关节肿胀、疼痛一年余，X线照片显示：右膝关节骨质疏松，关节间隙变窄，胫骨平台及股骨髁边缘虫蚀样骨质破坏，关节囊肿胀。最可能的诊断是（）
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对纳税人进行税务约谈时，税务机关评估人员一般不应少于()人。A. 1B. 2C. 3D. 4
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随着温度的升高，液体的密度（）。
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事业部组织结构又可以称作（）
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在OSI七层模型中，在物理层上所传数据的单位是（）。
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50岁男性患者，吸烟30年，近期痰中带血丝，痰中查到癌细胞，CT平扫加增强两肺实质内未见病灶，纵隔内未见明显增大淋巴结，气管、支气管未见异常。适宜的处置是（）
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使用消防栓时，最少要（）个人操作。
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In every cultivated language, there are two great classes of words which, taken together, comprise the whole vocabulary. First, there are those words（1）which we become acquainted in daily conversation, which we（2）,that is to say, from the（3） of our own family and from our familiar associates, and（4） we should know and use （5 ）we could not read or write. They （6） the common things of life, and are the stock in trade of all who （7） the language. Such words may be called“popular”, since they belong to the people （8） and are not the exclusive （9） of a limited class. On the other hand, our language （10） a multitude of words which are comparatively （11） used in ordinary conversation. Their meanings are known to every educated person, but there is little （12） to use them at home or in the market-place. Our （13） acquaintance with them comes not from our mother's （14） or from the talk of our school-mates, （15） from books that we read, lectures that we （16） ,or the more （17）conversation of highly educated speakers who are discussing some particular （18） n a style appropriately elevated above the habitual（19） f everyday life. Such words are called“learned”, and the （20） between them and the“popular”words is of great importance to a right understanding of linguistic process. 请在14处填上正确答案（）
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相对来说（）较为耐旱。
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用Open语句打开一个随机文件时，若省略“Len＝记录长度”，则记录的长度为