【单选题】根据零件的结构特点可将零件分为4类:( )。
【单选题】Which of the following statements about William Perrey is NOT true?
A.
He is very concerned about the North Korea's nuclear program.
B.
He favors aggressive diplomacy to resolve the cr.
C.
He thinks US troops should continue to join UN peace-keeping missions.
D.
He thinks large American units should not remain under US command.
【单选题】Where is the nurse-s house?
【单选题】Which of the following statement about William Perrey is NOT true?
A.
He is very concerned about the North Korea’s nuclear program.
B.
He favors aggressive diplomacy to resolve the cr.
C.
He thinks US troops should continue to join UN peace-keeping missions.
D.
He thinks large American units should not remain under US command.
【单选题】根据零件的结构特点可将零件分为4类:( )。
【单选题】根据所听到的内容回答题__________
【单选题】根据零件的结构特点可将非标准零件分为4种典型零件:( )。
【简答题】箱体类零件的结构特点及主要技术要求有哪些?这些要求对保证箱体类零件在机器中的作用和机器的性能有何影响?