氟利昂卧式冷凝器的传热管一般采用碳钢管，且大多数使用低肋管。
错误
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Whataretheparagraphqualities?
Hewouldhavegivenyoumorehelp,ifhe________sobusy.
TheToriesweretheforerunnersof________,whichstillbearsthisnicknametoday
Neverbefore_______sorapidlydevelopingasitistoday．
Becauseofthebadweather,thesportsmeethadtobe________.
