测定煤的热稳定性时,各项指标的重复性都不超过()。
A.1%
B.2%
C.3%
D.5%
参考答案:C
There's a man at the reception desk who seems very angry and I think he means _____ trouble. [ ]
A. making
B. to make
C. to have made
D. having made
徐铉与弟()以文翰知名于江南,有“二徐”之称。能精研文字学,尤善篆、隶,且独创“()”,作品有《()》拓本等。