与中国大唐帝国同时并存的帝国是 [ ]
A、古巴比伦王国
B、罗马帝国
C、罗马共和国
D、东罗马帝国
答案:D
She needs ________ after her mother. [ ]
A. look
B. to look
C. looking
D. looks
矫直轴类零件时,一般架在“V”型铁上使凸起部向上用螺杆压力机.矫直。