自然循环锅炉点火初期,应加强水冷壁下联箱放水,其目的是促进水循环,使受热面受热均匀,以减少汽包壁温差。
参考答案:对
--Well, my sons take great interest in most of the food on the menu.
--Thanks. _______________?
--Yes, fried fish, beef, chips and cola, please.
A.Can I do for you
B.At your service
C.What to follow
D.Shall I take your order
生理情况下,外周血中不应该出现的白细胞为()
A.嗜酸性粒细胞
B.中性粒细胞
C.淋巴细胞
D.单核细胞
E.早幼粒细胞