单选题：Questions are based on the passage you have just heard.

  • 题目分类：英语四级
  • 题目类型：单选题
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题目内容：
Questions are based on the passage you have just heard.
A．There are more bacteria in summer.
B．Sweat spoils the food easily.
C．Food gets bad more easily than in cold weather.
D．There are less frozen foods in market..

参考答案：
答案解析：

（一）背景资料某安装公司总包氮氢压缩分厂全部机电安装工程，其中氮氢压缩机为多段活塞式，工作压力为32MPa，电体和压缩机

（一）背景资料某安装公司总包氮氢压缩分厂全部机电安装工程，其中氮氢压缩机为多段活塞式，工作压力为32MPa，电体和压缩机本体分为两件进场，现场用齿式联输器连接，

分类：英语四级  题型：单选题
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自动化仪表的取源部件安装，正确的做法是（　　）

自动化仪表的取源部件安装，正确的做法是（　　）A．在工艺管道的防腐，衬里，吹扫后开孔和焊接 A．在工艺管道的防腐，衬里，吹扫后开孔和焊接 A．在工艺管道的防腐，

分类：英语四级  题型：单选题
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Why do large companies have difficulty switching to new mar

Why do large companies have difficulty switching to new markets?A．They find it

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Though whether digital textbooks will catch on still remain

Though whether digital textbooks will catch on still remain to be seen, the dre

分类：英语四级  题型：单选题
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