卵巢恶性肿瘤肿瘤细胞减灭术应使肿瘤残余灶直径≤________。
参考答案：1cm
About ____of the students in Grade Nine this year were born in the_____.
A．three five; 1996.
B．three fifths; 1990s
C．third fifth; 1997.
D．third fifths; 1990s
扭剪型高强度螺栓连接副终拧后，除因构造原因无法使用专用扳手终拧掉梅花头者外，未在终拧中拧掉梅花头的螺栓数不应大于该节点螺栓数的（）。
A．5%
B．10%
C．15%
