LNG的放散应经加热器加热后放散,放散天然气的温度不宜低于()。
A.-107℃
B.-162℃
C.-83℃
D.常温
参考答案:A
Her grandmother is usually _____ first one to get up in her family. [ ]
A. a
B. the
C. an
D. /
校对0—16kg/cm2,1.5级的工业压力表时,应使用标准压力表():
A、0—16kg/cm2,0.5级;
B、0—25kg/cm2,0.35级;
C、0—40kg/cm2,0.25级;
D、0---30kg/cm2,0.2级;