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【单选题】
选择 PLC 产品要注意的电器特征是( )
A.
CPU 执行速度和输入输出模块形式
B.
编程方法和输入输出模块形式
C.
容量、速度、输入输出模块形式、编程方法
D.
PLC 的体积、耗电、处理器和容量
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参考答案:
举一反三
【单选题】下列叙述正确的是(  )
A.
某溶液中加入氯化钡溶液有白色沉淀生成,且沉淀不溶于稀硝酸,则原溶液一定含有SO 4 2-
B.
某溶液中加入盐酸放出能使澄清的石灰水变浑浊的无色无味的气体,则原溶液一定含有CO 3 2-
C.
将80gNaOH溶于1L水中,所得溶液中NaOH的物质的量浓度为2mol/L
D.
同温同压下的一氧化碳气体和氮气,若体积相等,则质量一定相等
【单选题】Imagine you found out that ideas invented by a computer were rated higher by independent experts than ideas created by a group of humans asked to perform. the same task. Would you praise the designer ...
A.
are never superior to human ideas
B.
tend to be superior to human ideas
C.
are not necessarily superior to human ideas
D.
can no doubt to be invented by human subjects
【判断题】一个公司账套可以有多个账套主管,一个操作员可以担任多个公司的账套主管。(    )
A.
正确
B.
错误
【简答题】完形填空。 Imagine you receive an e-mail that looks something like this: ARE YOU GOING TO CLASS TODAY? How does 1 this message make you feel? 2 did the sender use all capital letters? Was he or she angry, ...
【单选题】包装的( )是现代物流的重要标志。
A.
机械化、自动化
B.
单元化、标准化
C.
轻薄化、单纯化
D.
规格化、集装化
【简答题】某实验小组用图 A 完成课本实验 “ 碳酸氢钠与盐酸反应的探究 ” 后,他们发现两种反应物的用量不同时反应后溶液中的成分也可能不同,于是他们对碳酸氢钠与盐酸反应后的大试管中溶液的成分进行探究,请回答以下问题: ( 1 )仪器 a的名称为 ;为检验碳酸氢钠与盐酸反应的气体产物,仪器 1盛放的试剂为 ; ( 2 )若实验室制二氧化碳应选装置 ; ( 3) 【提出假设】小组成员认为 A 中大试管的溶液的...
【单选题】Imagine you found out that ideas invented by a computer were rated higher by independent experts than ideas created by a group of humans asked to perform. the same task. Would you praise the designer ...
A.
are never superior to human ideas
B.
tend to be superior to human ideas
C.
are not necessarily superior to human ideas
D.
can no doubt to be invented by human subjects
【单选题】包装的( )是现代物流的重要标志。
A.
机械化、自动化
B.
单元化、标准化
C.
轻薄化、单纯化
D.
规格化、集装化
【简答题】完形填空 Imagine you receive an e-mail .that looks something like this: ARE YOU GOING TO CLASS TODAY? How does 1 this message make you feel? Why did the sender use 2 capital (大写) letters? Was he or she an...
【判断题】包装单元化和标准化是现代物流的重要标志,也是单元化物流的基础。
A.
正确
B.
错误
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