复杂或高杆塔带电作业必要时应增设（塔上）工作负责人。（ ）
参考答案：错
She had a computer at home, and her parents desired that she _____all her work at home.
A．do
B．does
C．must do
D．would do
当传动轴轴管弯曲变形在5mm以内时，应采用（）法校正。
A、冷压
B、热校
C、锤击
D、车削
