问题
单项选择题
空调定流量水系统，下面的设置哪一条是正确的？（）
A.末端设备冷水管设置两通电动阀
B.末端设备冷水管设置三通电动阀
C.水系统供回水总管之间设置旁通管
D.旁通管上设置电动阀
答案
参考答案：B
解析：末端设备采用三通调节阀才能形成定流量系统。
搜题请搜索小程序“爱下问搜题”
空调定流量水系统，下面的设置哪一条是正确的？（）
A.末端设备冷水管设置两通电动阀
B.末端设备冷水管设置三通电动阀
C.水系统供回水总管之间设置旁通管
D.旁通管上设置电动阀
参考答案：B
解析：末端设备采用三通调节阀才能形成定流量系统。
阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑 Mr Adamson enjoys playing  the violin in his spare time. He is often pleased with his own 21 . But it is a 22 time for his neighbors when Mr Adamson plays the violin, as he 23 so badly.One day Mr Adamson sat by a 24 and began to play the violin as usual. Mr Adamson seemed to be making 25 instead of music, but he was so 26 that he almost forgot what he was doing. Just 27 , some stones were thrown out of the windows under 28 Mr Adamson was sitting, 29 he did not pay any attention to it. The “music” 30 . After a little while, an empty bottle and a worn-out shoe were thrown out of the window, 31 . Only then did Mr Adamson know this was not the place for him to play in. Mr Adamson was very 32 . He thought, “ 33 no living people can understand my music, I should go to a place where people may appreciate my works.” So he 34 to go to a graveyard（墓地）. He came to a graveyard where there was no other 35 except the church bell. Mr Adamson sat at a grave and thought 36 , “I must do my best to 37 that my music is outstanding.” The more he thought, the more inspired he was, and 38 he began to play his violin. Suddenly a barefoot（赤脚  ） stretched out from the graveyard and gave him a heavy 39 which sent him flying. His violin also dropped from his hand. Mr Adamson felt very sad 40 his works were not accepted by anyone, not even the dead.
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