旋拧高强度螺旋应按一定顺序，对大面积节点板应由( )拧紧，并应在当天终拧完毕。
A．外围向内B．节点向内C．中心点向四周D．中央向外
参考答案：D
— Would you like some fried rice?
— I would rather eat noodles ______ have beef in them. [ ]
A. that
B. than
C. what
D. as
单盘光缆金属护套对地绝缘电阻应≥（）MΩ。
A、2
B、5
C、10
D、20
