依照专利法的规定，受专利制度保护的发明创新包括发明专利、实用新型和外观设计专利。 ( )
参考答案：对
Though the road covered with snow was very smooth, the old man smilingly ____ to be helped by others across the road．
A．refused
B．declined
C．accepted
D．promised
负荷备用容量——运行设备的可调最高出力与用电总额的差值.
