She asked _____ we were getting on well with our work.
A.how
B.if
C.what
D.that
答案:B
锅炉跟随方式就是锅炉设备正常工作,机组输出功率受汽机限制时,由汽轮机调节机组(),锅炉调节()。
室外光缆的接续、分歧使用()。
A.光缆终端盒
B.光缆盘留架
C.光缆接头盒
D.分纤箱