下面（）不是锅炉的基本参数。
A.压力；
B.温度；
C.出力；
D.煤耗量。
参考答案：D
十六进制数CDH对应用研究的十进制数是( )。
A．204
B．205
C．206
D．203
I don't know ____. You'd better ask Mr Wang. [ ]
A. where has he gone
B. where has he been
C. where he has gone
D. where he had gone
