切削用量
参考答案:
在切削加工时,为完成一定的加工任务而调整机床所用的参量,它包括三个要素,即切削速度,进给量和背吃刀量。
下列停电工作票申请原则上不予受理和批复()。
A.未列入月度计划的设备常规检修
B.未列入月度计划的基建配合停电和设备改造
C.未按规定时间和规定格式申报的停电工作票申请
D.设备恢复运行时有启动调试要求,但未同时上报调试项目或现场调试方案
E.本单位内未做好配合的停电工作票申请或对侧设备无法配合的停电工作票申请
It’s all annual back-to-school routine. One morning you wave goodbye, and that (1) evening you’re burning the late-night oil in sympathy. In the race to improve educational standards, (2) are throwing the books at kids. (3) elementary school students are complaining of homework (4) What’s a well-meaning parent to do.As hard as (5) may he, sit back and chill, experts advise. Though you’ve got to get them to do it, (6) helping too much, or even examining (7) too carefully, you may keep them (8) doing it by themselves. "I wouldn’t advise a parent to check every (9) assignment," says psychologist John Rosemond, author of Ending the Tough Homework. "There’s a (10) of appreciation for trial and error. Let your children (11) the grade they deserve. " Many experts believe parents should gently look over the work of younger children and ask them to rethink their (12) . But "you don’t want them to feel it has to be (13) ," she says.
That’s not to say parents should (14) homework-first, they should monitor how much homework their kids (15) . Thirty minutes a day in the early elementary years and an hour in (16) four, five, and six is standard, says Rosemond. For junior-high students it should be " (17) more than an hour and a half," and two for high school students. If your child (18) has more homework than this, you may want to check (19) other parents and then talk to the teacher about (20) assignments.
9()
A.single
B.piece
C.page
D.other