【简答题】Heat causes the (expand) of gases.
【单选题】— How long do you want me to heat the oil? — Heat it till it _____ to smoke. [ ]
【单选题】下列选项中,不属于两岸“三通”的是 ( )
【简答题】Metals expand with heat and contract with cold. contract:
【单选题】Metals expand with heat and with cold.
【单选题】平行于一个投影面的直线,统称为投影面的()。
【单选题】The ideal piston material would not ______. light and strong, conduct heat well, expand only slight when heated, resist wear, and be low in cost.
C.
expand only slight when heated
【单选题】All gases and most liquids and solids expand when ______ .
【单选题】平行于一个投影面的平面,统称为投影面( )。