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【单选题】
关于 CR 的叙述,下列哪项描述是错误的 ( )
A.
CR 以 IP 代替胶片作为介质
B.
IP 感光后的潜影经激光扫描后,转换为数字信息
C.
IP 不能重复使用
D.
数字图像可用磁盘、光盘保存
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举一反三
【单选题】在simtrade里,在哪里查询签约时的汇率?
A.
百度谷歌等搜索引擎
B.
帮助菜单
C.
银行
D.
市场
【单选题】皮肤II度烧伤有水疱形成属于
A.
出血性炎
B.
浆液性炎
C.
假膜性炎
D.
化脓性炎
E.
变质性炎
【简答题】Find the entropy change of the system and of the surroundings if 3.000 mol of water freezes reversibly at 1.000 bar. The freezing temperature is 0.00°C at this pressure, and the specific enthalpy chan...
【单选题】A student performed an experiment to measure the enthalpy change of combustion of ethane. He used the following values for the standard enthalpy changes of combustion of carbon and hydrogen.
A.
‘’
B.
C.
D.
【判断题】Enthalpy change and heat of reaction are the same concepts.
A.
正确
B.
错误
【单选题】For which reactions does the value of ∆H represent both a standard enthalpy change of combustion and a standard enthalpy change of formation?
A.
123
B.
12
C.
23
D.
1
【单选题】Under the conditions existing in biological systems (including constant temperature and pressure), changes in free energy, enthalpy, and entropy are related to each other quantitatively by the equatio...
A.
△ H – T ÷ △ S
B.
△ H – T △ S
C.
△ S – T ÷ △H
D.
△ S – T △ H
【单选题】The table shows the enthalpy change of neutralisation per mole of water formed, ∆H, for various acids and bases.
A.
B.
C.
‘’
D.
【】
【判断题】项目成本估算具有约束性和控制性,它是一种控制机制。
A.
正确
B.
错误
【单选题】Hydrogen peroxide slowly decomposes into water and oxygen. The enthalpy change of reaction can be calculated using standard enthalpies of formation.
A.
B.
‘’
C.
D.
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