脚手架标牌分为哪两种

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问题:

脚手架标牌分为哪两种

考点:基建安全知识竞赛基建安全知识竞赛题库
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计算cos42°cos18°-sin42°sin18°的结果等于(  )
A.
1
2
B.
3
3
C.
2
2
D.
3
2
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                                                           PowerSchool
                                                            Daily Bulletin
               Valley Christian High School Bulletin for Saturday, March 10, 2012
     Literature Club Do you love reading? Do you wish you had someone to talk with about your favorite books? If this is you, come down to Room 129G on Thursday the 15th, and come to the Literature Club's first meeting. Literature Club is a fun way to read and discuss today's literature with a group of people your age who love the same books as you. Don't miss out on the chance to hang out with other book worms.
     2013 Africa Trip There is a mandatory Africa trip 2013 Meeting on Monday March 12 in Room 109 at lunch. If you want to go on the trip next year please attend this informational meeting!
     National Spanish Honor Society Attention all National Spanish Honor Society scholars: come to the Initiation Celebration in your honor on Wednesday March 14 in Room 228 at lunch time. You will receive your membership certificates and honor cords.
      Fashion Show Get your tickets to the first annual fashion show on March 25 at 3:00 in the Conservatory. Don't miss seeing your favorite seniors walk the catwalk. All the proceeds (收入) will go to the Senior Legacy Gift Fund. You can purchase tickets at vendini.com or at the box office starting tomorrow and the next two weeks at lunch. The cost is $30.00 which includes the show and a wonderful reception (招待会) afterwards.
1. The Initiation Celebration held by National Spanish Honor Society ________.
A. is intended for Spanish students
B. aims to attract more people to it
C. is intended for its new members
D. aims to help people learn Spanish
2. We can infer that the fashion show is held mainly to _________.
A. promote fashions
B. raise money
C. satisfy the students
D. give a reception
3. You can exchange ideas with others _________.
A. at the Literature Club's meeting
B. at the fashion show 
C. at the Initiation Celebration
D. at the 2013 Africa trip meeting
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患者,男,30岁。3个月来右膝部出现一进行性增大的质硬肿物并肿痛,轻微外伤后疼痛症状明显加重。X线片示:右股骨远端存在偏心溶骨性骨质破坏区,伴有病理性骨折,骨皮质膨胀,有"肥皂泡样改变"。

这种肿瘤组织内的主要肿瘤细胞为()

A.多核巨细胞

B.基质细胞

C.成软骨细胞

D.骨髓内的原始细胞

E.成骨细胞

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在双代号网络进度计划时间参数中,节点最早时间表示紧前工作完成的时刻,用()表示。

A.TE

B.TF

C.TS

D.TL

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The blunder of Argentina’s goalie cost them the game in the match against Brazil.

A. triumph
B. beat
C. mistake
D. struggle

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