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【单选题】
ROM中的信息是_____。A.
由计算机制造厂预先写入的
B.
在系统安装时写入的
C.
根据用户的需求，由用户随时写入的
D.
由程序临时存入的
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【单选题】Flow control is a function that prevents network congestion by ensuring that(66)do not over-whelm(67)with data. There are three commonly used methods for handling network congestion.(68)is used by net...
A.
transmitting devices
B.
transmitted devices
C.
receiving devices
D.
received devices
【简答题】44g锌与稀酸反应，在300K和99.97kPa下，于水面上收集到氢气2.15dm 3 。已知300K时的水蒸气压为3.57kPa，相对原子质量：S32，Cl35.5，Zn65.4。则：
【单选题】Flow control is a function that prevents network congestion by ensuring that(71)do not overwhelm(72)with data. There are three commonly used methods for handling network congestion.(73)is used by netw...
A.
transmitting devices
B.
transmitted devices
C.
receiving devices
D.
received devices
【简答题】一密封容器的体积为V=6.0×10 -5 m 3 ，其中水的温度为T 1 =393K，相应的饱和蒸气压为p 1 =1.96×10 5 N/m 2 ．如在其中喷进10℃的水，则水的温度降为T 2 =373K，相应的饱和蒸气压为p 2 =9.81×10 4 N/m 2 ，求喷进去的水的质量．已知水的比热容为4.186×10 3 J/kg，汽化热为2.26×10 6 J/kg，水蒸气的摩尔定容热容C V...
【多选题】某有机物X在酸性条件下能发生水解反应，水解产物为Y和Z．同温同压下，相同质量的Y和Z的蒸气所占体积相同，X可能是（ ）
A.
乙酸丙酯
B.
甲酸乙酯
C.
乙酸甲酯
D.
乙酸乙酯
【简答题】●Flow control is a function that prs network congestion by ensuring that (71) do not overwhelm (72) with datA．There are three commonly used methods for handling network congestion ． (73) is used ...
【单选题】Flow control is a function that prevents network congestion by ensuring that(71)do not overwhelm(72)with data. There are three commonly used methods for handling network congestion.(73)is used by netw...
A.
transmitting devices
B.
transmitted devices
C.
receiving devices
D.
received devices
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