һx?0С?ÿС\xĿУֻһĿҪģxǰĸڡ
1˼fļCL0f֧йأһ˹̶һrL0
A 2LB 0.5 L
C 0.7 LD L
2Ӱ˼ٽۺء
A˼B
C˼D˼֧
3ij֧D61ʾĵ|֔?
D61
A.1/2ql2
B.ql2
C.0
D.1/8ql2
4ˮoĸߵͶˮʹõӰeȷ?
Aˮȸߵˮ[ʹڲʪȴⲿϴ¶ʹdeӰǿ?
BˮȶhʩĻ̽鏊
CʹˮȽߵˮrȡʩֹEˮȹ
D_
5Vиṹʱ⛌ΪƼȡf?
AB
CDȡ
6ͻõĵλ?
A˹Bţ
CDСr
7ijˮ׃Ϲ涨ˮ?
AƷBԟҪ
CɽoȼʹDf_
8ۿС80cmrF̽۷PFʽ֙
AһB֮
CŴD÷Ρ
9УĻsﵽgٽГ]
A 40%
B 50%
C 30%
D 70%
10¹TˮṄĽYȲСڣ
A 250mmB 600mm
C 500mmD 150mm
11͵ˮλػһ뾮ܣ¶Ϊ˹ܣˮڣ周ˮƃeˮܹӣԭͨˮˮӾEʹԭеˮλ¡
A. ;
B. ?
C.
D. ܾ?
12NqҪܡ
A. ֮ˮƽн
B. ֱ֮
C. ˮʔ]ˮƽ
D. ĸ߳H
13ãIԳнʩHаII̻赥λҎIH
ABа
CIаD
14ȽˮʩҪص
A.ˮIJoˮ
B.ˮoˮ?
C.Iʩʩ
D.ˮҴˮġ
15ij˾10_bq۴ݠ5Ԫ/_˷500Ԫ/_?00Ԫ/_{0.5%Q1.5%22%ù˾10_Ĺʰ18.3?
A.93.22Ԫ
B.92.76Ԫ
C.8129.12Ԫ
D.91.3Ԫ
16ij̺ͬ100Ԫͬsõֵʽбй̃ر?.2ҪطABC]o۵?.150.350.3r۸ֱָ20%15525%ùʽԪ
A.115.75
B.119.75
C.118.75
D.120.75
17λ깤λձ档
Aм
BGйTм
CʩλйTм
D赥λĿӦԤ֯йԔ?
18s2mСԑ8mĸĵײģrԑlĻ忹ѹǿȱZ?
A 30%B 50%
C 75%D 85%
19AṄϽgúˮࡣ
ABȻ
CβϡD|?
20ݽеĻݠṹשljΦУˑߴ磬L(B)30mƫϵĹ涨?
A 1mmB 3mm
C 5mmD 8mm