我现在打不开CAD，以下是粘贴的别人的，楼主可以试一试，最好先弄个备份。
菜单栏，工具——自定义——编辑程序参数，会打开一个记事本，
往下拉一点，正常会看到如下类型的一些参数：
3A, *3DARRAY
3DMIRROR, *MIRROR3D
3DNavigate,*3DWALK
3DO, *3DORBIT
3DW, *3DWALK
3F, *3DFACE
3M, *3DMOVE
3P, *3DPOLY
3R, *3DROTATE
A, *ARC
AC, *BACTION
ADC, *ADCENTER
AECTOACAD, *-ExportToAutoCAD
AA, *AREA
AL, *ALIGN
3AL, *3DALIGN
AP, *APPLOAD
AR, *ARRAY
-AR, *-ARRAY
ATI, *ATTIPEDIT
ATT, *ATTDEF
-ATT, *-ATTDEF
ATE, *ATTEDIT
-ATE, *-ATTEDIT
ATTE, *-ATTEDIT
B, *BLOCK
-B, *-BLOCK
BC, *BCLOSE
BE, *BEDIT
BH, *HATCH
BO, *BOUNDARY
-BO, *-BOUNDARY
BR, *BREAK
BS, *BSAVE
BVS, *BVSTATE
C, *CIRCLE
CAM, *CAMERA
CH, *PROPERTIES
-CH, *CHANGE
CHA, *CHAMFER
CHK, *CHECKSTANDARDS
CLI, *COMMANDLINE
COL, *COLOR
COLOUR, *COLOR
CO, *COPY
CP, *COPY
CT, *CTABLESTYLE
CYL, *CYLINDER
D, *DIMSTYLE
DAL, *DIMALIGNED
DAN, *DIMANGULAR
DAR, *DIMARC
JOG, *DIMJOGGED
DBA, *DIMBASELINE
DBC, *DBCONNECT
DC, *ADCENTER
DCE, *DIMCENTER
DCENTER, *ADCENTER
DCO, *DIMCONTINUE
DDA, *DIMDISASSOCIATE
DDI, *DIMDIAMETER
DED, *DIMEDIT
DI, *DIST
DIV, *DIVIDE
DJL, *DIMJOGLINE
DJO, *DIMJOGGED
DL, *DATALINK
DLI, *DIMLINEAR
DLU, *DATALINKUPDATE
DO, *DONUT
DOR, *DIMORDINATE
DOV, *DIMOVERRIDE
DR, *DRAWORDER
DRA, *DIMRADIUS
DRE, *DIMREASSOCIATE
DRM, *DRAWINGRECOVERY
DS, *DSETTINGS
DST, *DIMSTYLE
DT, *TEXT
DV, *DVIEW
DX, *DATAEXTRACTION
E, *ERASE
ED, *DDEDIT
EL, *ELLIPSE
ER, *EXTERNALREFERENCES
EX, *EXTEND
EXIT, *QUIT
EXP, *EXPORT
EXT, *EXTRUDE
F, *FILLET
FI, *FILTER
FREEPOINT, *POINTLIGHT
FSHOT, *FLATSHOT
G, *GROUP
-G, *-GROUP
GD, *GRADIENT
GEO, *GEOGRAPHICLOCATION
GR, *DDGRIPS
H, *HATCH
-H, *-HATCH
HE, *HATCHEDIT
HI, *HIDE
I, *INSERT
-I, *-INSERT
IAD, *IMAGEADJUST
IAT, *IMAGEATTACH
ICL, *IMAGECLIP
IM, *IMAGE
-IM, *-IMAGE
IMP, *IMPORT
IN, *INTERSECT
INF, *INTERFERE
IO, *INSERTOBJ
J, *JOIN
L, *LINE
LA, *LAYER
-LA, *-LAYER
LAS, *LAYERSTATE
LE, *QLEADER
LEN, *LENGTHEN
LI, *LIST
LINEWEIGHT, *LWEIGHT
LMAN, *LAYERSTATE
LO, *-LAYOUT
LS, *LIST
LT, *LINETYPE
-LT, *-LINETYPE
LTYPE, *LINETYPE
-LTYPE, *-LINETYPE
LTS, *LTSCALE
LW, *LWEIGHT
M, *MOVE
MA, *MATCHPROP
MAT, *MATERIALS
ME, *MEASURE
MI, *MIRROR
ML, *MLINE
MLA, *MLEADERALIGN
MLC, *MLEADERCOLLECT
MLD, *MLEADER
MLE, *MLEADEREDIT
MLS, *MLEADERSTYLE
MO, *PROPERTIES
MS, *MSPACE
MSM, *MARKUP
MT, *MTEXT
MV, *MVIEW
NORTH, *GEOGRAPHICLOCATION
NORTHDIR, *GEOGRAPHICLOCATION
O, *OFFSET
OP, *OPTIONS
ORBIT, *3DORBIT
OS, *OSNAP
-OS, *-OSNAP
P, *PAN
-P, *-PAN
PA, *PASTESPEC
PARAM, *BPARAMETER
PARTIALOPEN, *-PARTIALOPEN
PE, *PEDIT
PL, *PLINE
PO, *POINT
POL, *POLYGON
PR, *PROPERTIES
PRCLOSE, *PROPERTIESCLOSE
PROPS, *PROPERTIES
PRE, *PREVIEW
PRINT, *PLOT
PS, *PSPACE
PSOLID, *POLYSOLID
PTW, *PUBLISHTOWEB
PU, *PURGE
-PU, *-PURGE
PYR, *PYRAMID
QC, *QUICKCALC
QCUI, *QUICKCUI
R, *REDRAW
RA, *REDRAWALL
RC, *RENDERCROP
RE, *REGEN
REA, *REGENALL
REC, *RECTANG
REG, *REGION
REN, *RENAME
-REN, *-RENAME
REV, *REVOLVE
RO, *ROTATE
RP, *RENDERPRESETS
RPR, *RPREF
RR, *RENDER
RW, *RENDERWIN
S, *STRETCH
SC, *SCALE
SCR, *SCRIPT
SE, *DSETTINGS
SEC, *SECTION
SET, *SETVAR
SHA, *SHADEMODE
SL, *SLICE
SN, *SNAP
SO, *SOLID
SP, *SPELL
SPL, *SPLINE
SPLANE, *SECTIONPLANE
SPE, *SPLINEDIT
SSM, *SHEETSET
ST, *STYLE
STA, *STANDARDS
SU, *SUBTRACT
T, *MTEXT
-T, *-MTEXT
TA, *TABLET
TB, *TABLE
TH, *THICKNESS
TI, *TILEMODE
TO, *TOOLBAR
TOL, *TOLERANCE
TOR, *TORUS
TP, *TOOLPALETTES
TR, *TRIM
TS, *TABLESTYLE
UC, *UCSMAN
UN, *UNITS
-UN, *-UNITS
UNI, *UNION
V, *VIEW
-V, *-VIEW
VP, *DDVPOINT
-VP, *VPOINT
VS, *VSCURRENT
VSM, *VISUALSTYLES
-VSM, *-VISUALSTYLES
W, *WBLOCK
-W, *-WBLOCK
WE, *WEDGE
X, *EXPLODE
XA, *XATTACH
XB, *XBIND
-XB, *-XBIND
XC, *XCLIP
XL, *XLINE
XR, *XREF
-XR, *-XREF
Z, *ZOOM
你可以复制我粘贴的这些快捷键设置参数覆盖到你打开的记事本的相应参数，保存！重启CAD！
可能是 与 相关插件的 快捷键冲突
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