城市輸配系統的壓力級制、管徑、燃氣管網、構筑物及防護和管理措施，都與所使用燃氣的（）有關
A、溫度B
暫無解析
_____atinthisway,thesituationdoesn’tseemsodesperate.
Frankalmostneverreceivedanyeducation,____?
TheBentPyramidoutsideCairo__________ancientEgypt’sfirstattempttobuildasmooth-sidedpyramid.
Whatactually__________agoodangle—oragoodselfieoverall—isrootedinwhatweconsiderbeautiful.
Toobtainasatisfactoryresult，onemustapplytwo____ofpaintonacleansurface.
