【多选题】关于端面齿槽的铣削,下列说法正确的有( )。
B.
铣削直齿端面齿槽时,用廓形角大于槽形角的双角度铣刀
C.
圆周刀齿是螺旋齿的刀具,其端面齿的前角大于零度
E.
铣削直齿端面齿槽时,用廓形角等于槽形角的单角度铣刀
【判断题】絮凝与絮凝作用的原理是相同的,只是沉淀的状态不同。
【单选题】When obtaining payment by documentary bills, exporters use a ______ bank、
【单选题】江西瑞金诗人杨枝远的《莲子》诗用莲心之苦,写出 之苦。
【单选题】下列关于企业官方微博的说法哪个不正确
A.
企业官方微博运营是一项长期工作,需要用心维护
B.
企业官方微博的运营人员只要熟悉企业业务就能做好这项工作
C.
企业官方微博是企业发声的良好窗口,因此很有必要开设
【单选题】Which of the following is NOT true about Gardner obtaining his job when released from the jail?
A.
He couldn't go to the interview at the originally set time.
B.
Initially, the interviewer didn't perceive he was a job applicant.
C.
He wasn't given the job immediately after the interview.
D.
He obtained the job because of his professional knowledge in brokerage.