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【单选题】
国际辐射单位和测量委员会简称A.
ICRP
B.
ISO
C.
IBSS
D.
ICRU
E.
以上都不对
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举一反三
【单选题】The teacher's desk is _____ the classroom. [ ]
A.
in front of
B.
in the front of
C.
in the front
D.
ahead
【单选题】There is a teacher's desk ________ the classroom. [ ]
A.
in front
B.
in front of
C.
the front
D.
in the front of
【多选题】在气门弹簧工作过程中,有时会发生共振现象,共振会使配气定时遭到破坏,使气门发生反跳和冲击,甚至是弹簧折断。为防止共振的发生,现代发动机中,采用了哪些结构措施避免气门弹簧的共振?
A.
采用双气门弹簧
B.
采用变螺距气门弹簧
C.
采用锥形气门弹簧
D.
采用气门弹簧振动阻尼器
【多选题】What are the standard duties of the Front Desk manager?
A.
Making sure the reservation cards are correctly filled, assigning rooms.
B.
Supervising all the Front Desk personnel.
C.
Scheduling the Front Desk staff.
D.
Assigning proper tasks based on various workloads.
【简答题】Part-time Front Desk Position , a book development company, is looking for a part-time front desk office worker. This position is perfect for a person who is cheerful, dependable, and pleasant to ...
【单选题】The teachers’desk is __________________ the classroom.
A.
behind
B.
in front
C.
in front of
D.
in the front of
【简答题】下列对课文的分析不正确的一项是( )A. 《黄河颂》作者端木蕻良在该歌词中以丰富的艺术形象、壮阔的历史场景和磅礴的气势,表现出黄河儿女的英雄气概。 B. 《土地的誓言》以倾诉式的语言,抒发了作者对已被日寇侵占的家乡的深深眷恋之情,具有强烈的爱国色彩。 C. 《最后一课》这篇文章的标题不但指出了文章的内容,而且蕴含了悲怆的气氛和悲愤情绪,一定程度上暗示了中心思想。 D. 《木兰诗》描述了我国古代女英...
【简答题】发动机气门弹簧的作用及要求有哪些？
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