[单选] 液化石油气瓶解冻时，（）用火烤（）用沸水加热。

动物发育期间行为发生变化的原因有哪些？ 压力表是用以检测（）压力强度的测量仪表。 A.气体。 B.液体。 C.固体。 D.流体。 正仓院宝藏是（）时期最辉煌的文化艺术遗产。 白凤。 飞鸟。 弥生。 奈良。 The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to （）. avoid unnecessary pints inventory。 keep torsional vibration constant。 use existing supports and braces。 maintain specified injection characteristic。 I hereby（）that my vessel is fitted with a rudder angle indicator and an engine revolution indicator on the bridge in such a position that the pilot may read both without having to move away from his station; and that the rudder angle indicator and engine revolution indicator are in good working condition. delay。 state。 delete。 contai。 液化石油气瓶解冻时，（）用火烤（）用沸水加热。