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【单选题】
目前测量用电流互感器的准确级一般为()A.
0.2级
B.
0.5级
C.
1级
D.
3级
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【简答题】1 There are many arguments for and against television.
The poor quality of its program is often criticized and TV
commercials are also boring. So television is undoubtedly 1.__________
a great comf...
【简答题】1 There are many arguments for and against television.
The poor quality of its program is often criticized and TV
commercials are also boring. So television is undoubtedly 1.__________
a great comf...
【简答题】1 There are many arguments for and against television.
The poor quality of its program is often criticized and TV
commercials are also boring. So television is undoubtedly 1.__________
a great comf...
【简答题】符号 (H 2 O,1,298K)表达的具体含义是______。
【简答题】符号 (H 2 O,1,298K)表达的具体含义是______。
【简答题】已知CH4(g)+2O2(g)=CO2(g)+2H2O(g)反应的热力学数据：△rHΘm(298K)=-802．3 kJmol-1，△fHΘm(CO2，298K)=-393．5KJmol-1，△fHΘm(H2O，g，298K)=-241．82KJmol-1，求△fHΘm(CH4，g，298K)=?
【简答题】1 There are many arguments for and against television.
The poor quality of its program is often criticized and TV
commercials are also boring. So television is undoubtedly 1.__________
a great comf...
【简答题】298K，标准态下，1g Fe在氧气中完全燃烧生成Fe 2 O 3 (s)，放热7.36kJ。则298K时，Fe 2 O 3 (s)的标准摩尔生成焓等于______。M(Fe)=56g·mol -1 。
【多选题】cpu的组成与功能,描述正确的有?
A.
中央处理器主要由控制器和运算器两部分构成
B.
中央处理器主要由控制器和寄存器两部分构成
C.
控制整个计算机系统的协同工作并执行个汇总运算功能
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