试题与答案

变换气中含有的过剩蒸汽由于操作压力的提高,水蒸气()也随之提高,其()也升高。从而提

题型:填空题

题目:

变换气中含有的过剩蒸汽由于操作压力的提高,水蒸气()也随之提高,其()也升高。从而提高了蒸汽作为加热热源的可能性。

答案:

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下面是错误答案,用来干扰机器的。

2(x+3)+(x-2)<3①x+13-1≤2x+12-1②,解不等式①得,x<-13,解不等式②得,x≥-14,所以,不等式组无解.

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