һѡѡ⣨ÿС2֣10С⣬20֣
1 ̹ҪȫĹһг DZ Aǿ Bն Cȶ DӲ 2ӦĹϵǣ
AӦ BӦĴ CʸӦDZ DӦǷֲļ 3ԲŤתʱƽ裬ΪԲŤתʱ棨
A״ߴ粻䣬ֱΪֱߡ B״ߴı䣬ֱΪֱߡ C״ߴ粻䣬ֱֱ߲ߡD״ߴı䣬ֱֱ߲ߡ
4ijֵָӦΪ
?s?200MPaģΪE?200GPaֱֽΪ2mmĸ˿һԲ
ϣʹ˿ɺΣԲֱСڣ A0.8 B1.6 C2.0 D2.4
5ûַıΣҪõ ȷֳ
Aƽ B߽ C D⻬ 6ͼʾӦѭrƽӦ
A -102010 B 301020
?m?ӦaֱΪ
?C
11?32010 D 31020
??7һӦ״̬ͼʾӦ12
A 30MPa100 MPa50 MPa
B 50 MPa30MPa-50MPa C 50 MPa0-50Mpa D -50 MPa30MPa50MPa
?3ֱΪ
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8ͻصΣϵͳĶϵΪ A2 B3 C4 D5
9ѹٽĴС
A ѹܵѹСйأ B ѹ˵ȴСйأ C ѹ˲أ
D ѹ˵ȴСء
10ͼ˷㵯߸ռܵλƣҪ˼ǸDZģ AEIΪ Bṹ߱Ϊֱߡ CMͼֱߡ DҪͼ(10)
MM
һֱߡ
30kNCD20kN/mB2q=F/a12F2F1m3m
1maaa1(e)
1ͼ (2) ͼ
ͼʾṹУBCһֱΪ2mmĸ˿ɣ˿ӦΪ
????160MPaq?30KN/m
BCɶٸ˿ɡ10֣ 2
B 3m A C
4m
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?20mmϱԵA㴦Ӧ?0??400?10?6ˮƽֱƽ
B㴦??300?10?6֪ϵĵģE?200GPaɱ??0.25a?2m
?45?ӦӰ죬ϵغFMeĴС
ġ14֣֪Բֱd
A d F
B 45? a Me
塢16֣ͼʾṹ
ABA?21.5cm2ģ
Wz?102cm3ϵӦ[?]?180MPaԲCDֱd?20mmϵĵģE?200Gpa?s?250MPa?p?200MPa ?1?100,?2?50ѹ˲ΪϸʱֱACDΪԼ֪l1?1.25ml2?0.55mF?25kNȶȫϵ[n]st?1.8У˴˽ṹǷȫ
ϡ
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һѡ(ÿСĸѡУѡһȷ𰸣ȷ𰸵ɵڡÿС2֣20)
T?1.ŤתӦʽ??=
IP½( )
A.ν B.Բ C.Բν D.״
2.ͬһƳɵʵԲͿԲᣬȺͺͬŤնȽϴĸ?( ) A.ʵԲ B.Բ C.һ D.ж
3.νĸ߶һȼСһʱӦǿȿǣijı仯Ϊ( ) A. B.һ C.Сһ D.
4.ͼʾɶBӶΪ( )
aama(l?)ma3(l?)2 B. 2A.
EIEI5.ͼʾԪӦA. B. C. D.
max=100MPa max=0 max=50MPa max=200MPa
maxΪ?(
C.
ma D. EIama2(l?)2 EI )
6.õǿУͼʾԲǿʱõǿΪ( )
A.
PM2T2?()?4()AWZWPܣۦң
B.
PMT??AWZWPܣۦң
C.
(PM2T2?)?()AWZWPܣۦң
D.
(PM2T2?)?4()AWZWPܣۦң
7.ͼʾĸѹ˵IJϡֽͬʧȵȺΪ( ) A. (a),(b),(c),(d) B. (d),(a),(b),(c) C. (c),(d),(a),(b) D. (b),(c),(d),(a)
8.ͼʾ˼ѹնΪEAͼʾ Uбʽĸȷ?( )
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