【单选题】铣削宽度较宽而深度不大的台阶宜采用( )。
【单选题】Nobody ____ how to run this machine.
【单选题】Nobody _how to run this machines
【单选题】Nobody how to fix the machine.
【单选题】The instructions on how to use the new machine______that nobody seemed to be able to understand.
【单选题】Nobody knew _______ a living in that country.