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【多选题】
关于落地式脚手架剪刀撑说法正确的是()。A.
脚手架搭设时应同时搭设剪刀撑
B.
斜杆与地面夹角在45～60°之间
C.
当斜杆接长采用搭结时，搭接长度不小于1m，用不小于3只旋转扣件固定
D.
高度在24米以上的脚手架，必须在外侧两端.转角及中间间隔不超过15m的立面上，各设置一道剪刀撑，并由底至顶连续设置
E.
高度在24m及以下的脚手架应在外侧全立面连续设置剪刀撑
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举一反三
【简答题】Discuss the optical amplifier in optical fiber communication.
【单选题】Janet says that she _____.
A.
loves boats
B.
has never punted before
C.
isn’t used to boats
D.
is scared she might fall in
【单选题】Janet says that she ____.
A.
has never punted before
B.
is scared she might fall in
C.
isn't used to boats
D.
loves boats
【简答题】Janetsays that she _____.A. (a) loves boats B. (b) has never punted before C. (c) isn’t used to boats D. (d) is scared she might fall in
【简答题】Janet
says that she _____.A. loves
boats B. has
never punted before C. isn’t
used to boats D. is scared she might fall in
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