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【单选题】
进行疲劳设计时,我国规范采用的设计方法是( )?A.
近似概率极限状态
B.
全概率极限状态
C.
容许应力幅
D.
半概率极限状态
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】Sorry I’m late—I was so engrossed at work that I completely forgot about the time!
【单选题】I did not think his plan to lower costs would work ______ I did not say so at that time.
A.
as
B.
because
C.
since
D.
although
【简答题】Revise the underlined part to achieve parallelism: Leonardo da Vince was known both as an inventor and painting pictures . Leonardo da Vince was known both as an inventor and _____ ________.
【单选题】The tone of the author to Leonardo da Vince is______.
A.
critical
B.
neutral
C.
curious
D.
praising
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