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【单选题】
( )是债务人向债权人发出的支付承诺书,承诺在约定期限内支付一定款项给债权人。A.
银行承兑汇票
B.
股票
C.
期票
D.
商业承兑汇票
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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
【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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