额定电压110kV变电所增加的接地电容电流值附加值为()。
A.10%
B.12%
C.13%
D.15%
参考答案:A
具有桩成孔方法简便,能节省劳动力,降低成本,做成的桩承载力也较大的是( )灌注桩。
A.爆扩
B.套管成孔桩
C.人工挖孔
D.钻孔
(二)
Children who often watch the program ______ .
A.can have problems in school
B.will find it a great help
C.will take no interest in their studies
D.will be well educated