[单选题]下列关于职业类型划分,说法不正确的是()。-我要搜题网

[单项选择]根据《土壤中放射性核素的Y能谱分析方法》（GB／T11743—1989）分析土壤中钾-40时，其体标准源的不均匀性应小于±2％，总不确定度应控制在（）以内
A. 2
B. 5
C. 1O
D. 15

[简答题]绘图题：试画出正常运行时绝缘子串上的电压分布曲线。

[不定项选择题]共用题干 Sending E-mails to Professors

One student skipped class and then sent the professor an e-mail__________(1)for
copies of her teaching notes.
Another__________(2)that she was late for a Monday class because she was
recovering from drinking too much at a wild weekend party.
At colleges and universities in the US,e-mail has made professors more approachable
（平易近人）.But many say it has made them too accessible,___________(3) boundaries
that traditionally kept students at a healthy distance.
These days,professors say,students seem to view them as available________(4)
the clock,sending a steady stream of informal e-mails.
"The tone that they take in e-mails is pretty astounding（令人吃惊的）,"said Michael
Kessler,an assistant dean at Georgetown University."They'll_______(5)you to help:
'I need to know this.",
"There's a fine_________(6)between meeting their needs and at the same time
maintaining a level of legitimacy（正统性）as an_________(7) who is in charge."
Christopher Dede,a professor at the Harvard Graduate School of Education,said
_________(8) show that students no longer defer to（听从）their professors, perhaps
because they realize that professors'__________(9)could rapidly become outdated.
"The deference was driven by the__________(10)that professors were all-knowing
sources of deep knowledge,"Dede said,and that notion has________(11).
For junior faculty members,e-mails bring new tension into their work,some say,as
they struggle with how to__________(12).Their job prospects,they realize,may rest in
part on student evaluations of their accessibility.
College students say e-mail makes_________(13)easier to ask questions and helps
them learn.
But they seem unaware that what they write in e-mails could have negative effects
_________(14)them,said Alexandra Lahav,an associate professor of Law at the
University of Connecticut.
She recalled an e-mail message from a student saying that he planned to miss class so
he could play with his son.Professor Lahav did not respond.
"Such e-mails can have consequences,"she said."Students don't understand that
_________(15)they say in e-mail can make them seem unprofessional,and could result
in a bad recommendation." __________(7
A.teacher
B.instructor
C.lecturer
D.professor

[单选题]下列关于职业类型划分,说法不正确的是()。A.笫四大类,包含专业技术人员B.第五大类,包含农、林、牧、渔业生产和辅助人员C.第六大类,包含生产制造及有关人员D.第七大类,包含军人

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[单选题]下列关于职业类型划分,说法不正确的是()。
A.笫四大类,包含专业技术人员
B.第五大类,包含农、林、牧、渔业生产和辅助人员
C.第六大类,包含生产制造及有关人员
D.第七大类,包含军人