锅炉热平衡试验的目的是什么？
参考答案：是测定锅炉的热效率，确定各项热损失的大小，分析和评价运行工况，考核各项经济指标，制订最优热工制度和合理工况。
选择括号内恰当的单词或词组填入空白处，使句意完整、正确。
小题1:I want to keep healthy, so I eat fruit and vegetables __________(instead/ insead of)chips and chocolate.
小题2:Everyone in our class felt ____________ (exciting / excited)because we were winners.
小题3:－Could you please____________ (tell / telling )me your plan for this year?
－Sure.
小题4:－Will you visit the Great Wall ?
－Yes,we are___________ (leaving/ leaving for) Beijing tomorrow.
小题5:－LiuXiang is one of the beast ____________ (runner/ runners) in the world.
－I think so.
The jeans are too long. Would you mind give me___ ?[ ]
A. the shorter pair
B. a shorter pair
C. a short pair
D. the shorter ones
