快速以太网标准比原来的以太网标准的数据速率提高了10倍，这时它的网络跨距(最大段长)

今年是联合国秘书长的换届年，联合国将依据《联合国 * * 》选举产生新任秘书长。根据《联合国 * * 》，对于秘书长的选举程序，下列哪一表述是正确的

A．由联合国安理会采取关于程序性事项的投票程序，直接表决选出秘书长
B．由联合国大会直接选举，大会成员2/3多数通过
C．由安理会采取实质性事项表决程序推荐秘书长候选人，经联合国大会以简单多数表决通过
D．由安理会采取程序性事项表决程序推荐秘书长候选人，经联合国大会表决获2／3多数通过

在生产运作单位中，集中同类型的设施，进行相类似的生产加工或服务活动，这个生产运作单位的生产布置形式称为（）。

A.固定布置

B.工艺专业化布置

C.对象专业化布置

D.混合类型布置

着衬衫时，男员工工号牌佩带在左胸前兜口上方（），并处于袋口的中间位置。

A.半厘米处

B.一厘米处

C.一点五厘米处

D.两厘米处

不属于高效类化学消毒剂的是（）。

A.福尔马林

B.环氧乙烷

C.2%碘酊

D.2%戊二醛

E.0.2%过氧乙酸

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.

1（）

A.very

B.exact

C.right

D.usual