ҿῨھ ڶ ų˶ɵ
[A]
1(08786913)(2018ݼ)Գٶv0aǿųͼʾ˶оb㣬OaObȥųһyƽеǿ糡v0a糡ͨb㣬ô糡ǿEŸӦǿB֮Ϊ( )
Av0 C2v0
B1 D. 2
v0
C [ǿųԲ˶OΪԲģOaObǿ糡ƽ˶ Obv0tOat
2mɢ٢ڵã2v0ѡCԣ]
mv0
qBqE2
EB2(08786914)ͼijٶѡԭʾͼһ뾶ΪRľԵԲͲдŸӦǿΪBǿųƽߣԲͲijһֱ˿СM
NһʲͬȺɾΪkӣMԦ䣬һЩضٶ
δͲײֱӴN(Ӽ)N( )
AӣΪkBR/cos BӣΪkBR/sin CǸӣΪkBR/sin DǸӣΪkBR/cos
ǺǸ ҿῨ
B [ΪƫֶӴ磬˶켣ͼʾɼ
v2kBRϵ֪rqvBmɵvBȷ]
sin rsin
R3(08786915)(2018ĩ)ͼʾABCDдֱֽǿųһ()һٶȴABߵеMؼȴֱABֱִڴųķųôADߵеNŸӦǿBΪԭ2䣬ųλ( )
AA
CCD֮ijһ
BND֮ijһ DBC֮ijһ
A [ǿųԲ˶ӴֱABߴеM룬ִADߵеNٶȱشֱADߣAΪԲģRŸӦ1
ǿȼӱʱ뾶ΪԭģAȷ]
2
4(08786916)xϷдֱֽǿųͬһִӴOų䷽xļнǦ60ʱٶΪv1v2ӷֱabųͼʾ45ʱΪʹӴabеcųٶӦΪ( )
mvqB
1
A.(v1v2) 2C.
3
(v1v2) 3
3mv1
B.
6
(v1v2) 4
6
(v1v2) 6
3mv2
D.
B [ɼιϵ֪xOa3R1
qBxOb3R2
qBxOc2R3
qB2mv3
ǺǸ ҿῨxOcxOaxOb2
ɵv3
6
(v1v2)] 4
5(08786917)ͼʾMNPMNΪֱİԲϵ㣬OΪԲԲģOڵĴֱֽ˶ٵMOP60㣬MNһֱߴֱֽ棬ͨдСȵĺ㶨ͼʾʱOĵܵСΪF1.MֱPOĵܵСΪF2.ôF2F1֮Ϊ( )
A.31 C11
B.32 D12
B [ֱMNPʱOĴŸӦǿBСȣMNĵOĴŸӦǿȷ£ϴŸӦǿȴСΪB12BPNĵOĴŸӦǿȼнΪ60㣬ϴŸӦǿȴСΪB23BɵãB2B132ΪF壽qvBF2F132ѡBȷ]
6(08786918)ͼʾMNϷǿųֵͬɵabͬĶͬʱOǿųУӵ䷽ų߽MNļнǷֱΪ3060㣬ͬʱP㣬֪OPd( )
Aab˶뾶֮Ϊ13 Babӵij֮Ϊ523 Cabӵ֮Ϊ425 Dabӵĵ֮Ϊ215
D [ͼ֪aڴų˶켣뾶Ϊrad˶켣ԵԲĽΪ300㣬˶켣Ϊsa
5ra5d3
bڴų˶켣뾶Ϊrbd333
2rb23dԲĽΪ120㣬˶켣Ϊsbab˶뾶֮Ϊ
3931A˶ʱttatbabӵij֮Ϊ532B
svǺǸ ҿῨ1212
ͬĶ䣬mavambvbabӵ֮Ϊ475C
22
t
2mabӵĵ֮Ϊ215Dԣ] 360Bq
7(08786919)(ѡ)(2018ϰУʼ)ͼʾһнųı߽
һԴˮƽɦȽǵIJͬʣųͬ121ųƫתӱ߽Aų2ųƫתӱ߽BųOAAB( )
A12ٶ֮Ϊ12 B12ٶ֮Ϊ14
C12ڴų˶ʱ֮Ϊ11 D12ڴų˶ʱ֮Ϊ12
AC [ӽųʱٶȵĴOAĴֱƽߵĽΪ1ڴųԲ˶ԲģͬӽųʱٶȵĴOBĴֱƽߵĽΪ2ڴųԲ˶Բģɼιϵ֪ڴųԲ˶İ뾶֮Ϊ
mvr1r212r֪12ٶ֮Ϊ12AȷB
qB2mڴųԲ˶ھΪTڴųԲ˶Ĺ켣
qBԲĽͬڴų˶ʱͬCȷD]
8(08786920)(ѡ)(2018һһģ)ͼʾһεǿųabcdeadе㣬fcdе㣬aضԽ߷ٶvһĴӣǡôe( )
ǺǸ