常用的气门锥角为（）。
A.10°～15°
B.20°～35°
C.30°～45°
D.40°～55°
参考答案：C
．________ all over the hills and around the lake are wild flowers of different kinds.
A．To grow
B．Growing
C．Grown
D．Grow
深圳工伤职员对劳动能力鉴定结论不服怎么办？
