a laboratory for teaching object-oriented thinking.mht

十篇国外的重要资料

yQK/vwDv7wAEMaAAkNaQyQAACwCQlE4ApAAByQAVv6gAfMkAyb8AvyAsABbBoABm1hgAAFDBCABm
ADzYAMnKAL+/AO/vAAAofAAAHAAVCMgBAAUAAEAAAMgBCMkAAL8AAPgIAIK0aXHIAAq/QADvA6S0
AMnZAb8FFWYALoGQAAjAEMrIAHm0LMrZAL8FAAEAEgGQAIoUACUAAM4A//8B//8V/38A//zQAMnI
AKm0MW7ZAAMFAEYAAG6QAAMUAADcagDIgQC/AqC0ANbZAAAAagCQgQAUAgMAEAABygC8bMDAIBQU
EfAAAAGQIAAA/wABAAAVAAAxbAAAIAAAEQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAAAEALAAAAADwABUB
AAj+AAMIEEhwoMGCCA8qTMhwocOGEB9KjEhxosWKGC9qzMhxo0ePHUOCHCmyJMmTJlOiXElQpUuW
MF/KjElz5syaOG3m3KmzJ0+QPoP+FEp0qFGRR5MWXaq0aU+mUJ1KjUpVo0MAWLNq3cq1q9evYMOK
HUu2rNmzaNOKDcoQgIC3cOPKnUu3rt27ePPq3cu3r9+/gO+69Xk1sOHDiBMrXsw4LwC2C902nky5
suXLfQfvLIy5s+fPoAE/5tk2tOnTqEFr1sk5tevXsAOPfho5tu3buOeuxtk6t+/fp2fnLA28uHHM
u28mlHy8ufPEwm0Sf069Ot/kNHvj1epX8ta/zK3+i6cbveb07XHDO37LXL1e9+PjY3+pvS589ljZ
C/C+Xz/c9uFl9V9/+A14X3y/lSfTeXbdx99+/OUHoYD+PRihhQUi+Nx8MNVHHnoEtlfhf9ylR2B/
352oYXMKxsSgfXJ5J6GII57oHoUiqnfgir5xqJKHutGIoX4zmhhijW4VeSSPzrXo0ov2UTjhg0T6
Z6WEUxpI4oBMsvgTkF2GGZuTLEEp5pmu+bgSmGi2qRpkCO3o5pyXqWkSm3TmORmZKZmp55+M2XkS
nlOqZehYdQLqGJwHyanoh482+OVykWZWqX2MEuTopVZyOiBhlHoKoqjsZTrQppyiqqegSIVKKoz+
r+5nagCqVlornayORKint87JJ0p+vtqrm7l2tGuqscpKWm3J6pZssR+56piUhw2rIpeBXldid8b9
WlKwMWZYrWyfqWottglOqhCqAW7p7oQmApjejUnml+SR5xq5nr7yVgkvcN6SBC66QxZMpMEqRpih
jNeKttd3VFp4b8O4QZvRse1CHK6/KJaIpbs0ooguue9tLCOOHAM8K7tb6rixyCnPGySVMFPMbcnx
jozvcRZbJa2kXCKMoZIRY6tkiBMjtil8WArN88rvbQuhzCTm+O6/VU8t5JKGLZ2ijltPXVzPFR3b
5J7PQt1lvpAKq25BbOOa9rJxNutsrGRbZLb+rXPTVvfDH1u747khOxx1ipQVjtzbBrHcKcmJL3Zr
3KOGFnBIAz9u485ZI+1s0mKLW+/EUoIO63Va/gt606zDe3LqkjMukLkmi20vklwfvGTBpCNp+t0P
Uy3x7sTDzLvNoqkdPOxDBh16zp7jh7LVuAtmqc7Hh9sux81DJzvy/DLve8gfGy+zy5uHLWethZfe
qb1Hp+88+N0pb331TteccY3mF4/w/Ti7Ev5ANqL8Ue5Tm/lZg5rWOYkRrXy9k967GAag/wFvX1dC
mY3g1zqtNVBz1bIfeHTGowOW8Htso1aYTLiiywGFWXYj4aXyFpG9RYqFGnIhRzKHLLyhMIb++iKV
DjfCwxk+64dABOEMRWg3HCKIhhKx4aOcKB8mNouK44FiQ6SoKCyKZ4gYKSLffAiqdYHnUGhMoxrX
yMY2spEiYlRiEkWlJil6cY5VnEgc6YfHG+pNgRjso7DgCEPUCZKMUQRk5Q7JK0L+7XqMpOMfzXiz
SDZSj4VcniWRVUNFAnCTtnJko0YIuMCBUj6ThBspcVa+U35RlJpaZeUiprAJJqxfMXMluTpJSUjO
Ene3210EI/g8XXYNlqeS5SeHlz6PVehkDDSm93ipykqOKn7uu9H7WnlHRvJpj0szEi2HWT3byVCa
3KJm45QZJfdJcHVhU9320BlCTD7SkLH+o2e61Dk7do5Lnz1CJq38CVAx1dGTQCsosQTaq24qNE2p
XKc1H2pQhhKUoi2MaD8nSh43tjFRfXsIOPHoUOoctJf4BGJJN2RRjl7xpfzk4wVjuNImtdSXNIVp
IlGqSZVe8aYpzekRY9pQkv7UnqN06RGHutNq4rSJR4XISEvZyiA1pqYylV5VA7nPpkr0qQntqfcs
F9SL2uabkUmLWPunVXFdrXS1LJdYyUc9FebmpC5hl8fqJb/cGdCDcj1cMNVHTJUhVSWOE2cGr4Y8
hvGvM4kdH9GyCtGYliSy5YSg4rBWIJotLoDcu9vvAnrYlYSzdn0l3wAXRlauim613dL+KEq8xp3m
8ZWzoduWgLpnGdpq0JbRG5tAT4JV6xQ3tpYlyXFNGlWR0mS5G9LpFmUC3bOFlCEzqa6XmDrdmJjL
lIbjGVXtmk/KQme4Ikls3LQL2vZGDjV4ZQlmU3tLZsbItgHC5fO2+jJNkq5I+e2c1gbLQByi9SW0
U+yMyMnWAq6WwbxtG2gnC9haDg1/o+2abC/ry6Tx9kIddR76tOpYt34ykNoU5ufCp76ronckp+2r
/6JZTAnGbJ73pdqJrzmveA6YZtQrXuySG5IY/5V47WuZ02y7uUUuc374BeaD9/TijuiVrrx7IL3i
Gjj9wjXGKK4afkfXr2CqTo679Gr+SvK12RNedyHZVRp/cyhdh9SEvbF9M0LiPEc83ya+azaqng/C
Z9NQ7o5+PuuGlQtfxSC6udh9bqAADD0dE/O/NHZ0nRNy53xSUHeKHbDnLIy2QbdE0ld18DY1yGUh
l9dtRAbJAd3p4SBK2V8Z/ifequyRQw8Qgg++tBMTPaZFF9nRrIYdcC/M2nMqdYmlNQmxwzrTVwvR
2LKObogrM+3XHBgm3a7YphXS6T5DGs6oTmK4UwPo2Qp619Em7rthrearePTe+M63vvfdlUXF+54Y
Xdt6Yr3RgK/Q31K9yLoNHl5JEdy8DBfvdng90IgzyVHtRqjFmTvxfyd143RGz8P+Fw5y9+qG4iQv
uZOdNXKVPxHhzqXId8kL1raebmYpN+7A663x8OlatA4CWs6rg3GU9xSXwn5dbvnFQRtj+a1Dh6jI
ec7TBdK6sxAup/8kC2WtC1UwRmelmA1WV2eO7HdFE2cF53ztqXc3Io7bLLMbvNgz27jJKjRzH4vu
8ViGeeuA796R98e1wvrU7XauCJiRzj8clRhxe81SoWyONba7reMJl7nLUYl4Tit+81mEeaQ1D3qd
d57cny890UWPbtKrXtvWa/nrYd+gsM9+u7GnulOtzm+19valmI/5RKLe6KXm/u0SIX5wgA/2vifT
3MZ3uO6/engfBn/0w59324/+n3iLKN/QVxyL7as/yA6lXt3jxpzCtU9H+pyf/Nd+0vrHe3Nn51mw
wyI5GFHvfXwG/eBr9WyKJn+u90sLczv/JUBuZXkgxVV0lTo0d1bu13/413XmRGqwtXwVmHafBnHg
R4DZJ3Yk1mSFMkyR521z9UzJlnL7VxAaEXdnt03aI0MMyG0pKHe51CMuMn8G+D/CZoEeaG3191qA
1y0TCHcTNkG1tl85JmDFtx1f04QqhlxlwoPw137mR4Hox13AYoVfV34/8n5fGH9VWIBjiIVhqIU/
917gh381uEo1pUUYsV5BGICQJYCaBl9HmHzeAzYgE01cBj+qUUmYljKsIy/+u3V3uZZmfeKFpLQ9
vSM0teZZv5dSFDZYuKZqx8NCLWgQL6g0Cvg+Fpg9gXV0ovVMK2Y0eIdmIwSCEMFmuhVEQWZBb7iG
PCZgQDY6ohhauXNeWYiEGqaAkVhATNZmbPh3gUdAnJM/2eKKD0E4soh0BdZ4uliHZRVWa0eNZPaH
GxRhSrOHDfF9rYVIjWiGUGVq0aKGZ8grO2iOzAeGayKG50iOXeiO7VSLKzd2+BiMdpiHaQKOZmOM
DUdtnkE7WKRdcuiIN+dlFaQlHnYgFkZpjHWNMBJgf9hiSsduANlzIzhlo2ZOFFNmqOiNrgUrLdY/
w0OJH1iGIbgva2c6WyP+JBCJPb7DjyDiWfO0ZGOykVVnkjHIYqFYY34FiD1Wi76Fk0B5ayjojJkD
iR4JYiSoih4ZhEb2a8TodXr4i3yIjF3WYwLUkMCTjYW3j6yYMFCHizMGGwlpj9YHb2kIjFtIj9+i
kNEnRDy5e+vISSz5iux3SW+5lQ2ofOL4e0yZScdoem4Zj+ooGh2UiNmkYyjIhXPJlsujkx/Zi6/X
iQLxiZo2YkQZXLenH4UJcGeElESYi6FZKloZjv9kmT6Ymv0xmh/HmB1UYRRmd7OnmW8hj7ApbrLp
d72ZIHdJfcHpm3v5jMUpnKvJRcmZKL/5fIdjaxR5mPbXRMNZcLdoi5X+WG1G9ZwV51p1VV+oaFWV
h5m2s2C6SEvWuZwc+ThQiYnLWDspCZNPiZXs6J3sU2kfBmqyOIpSqE2ERVPXKVOqdZLuxIRS6Y1m
lmwyKJkCQ5cvM3iqZpYo+Vj0hWRpl5h3wpsd9XTCpGXkaXeU6HiSJ5Gu46DqR5kYNJiRpJuc2TVk
2Zwsd5x7JKO9NaAsqnJr2ZI2qpY42qMDSKOGCaTB8aNEupRCSppHajlGuqSNhp9OqpHs2ZNReodQ
WqWGhqO9t6Vc2qVe2m/eORViWhVkOqZTWqZoaqZpuqZEpKZuyqZw+qbYFqd0Kqd1uhR3aqd6mqdV
sad+yqd/ehSAOqgUgUqof2mohZqoiEpxitqoi5qoAQEAOw==

------=_NextPart_000_0039_01C9A31C.C43BB970
Content-Type: image/gif
Content-Transfer-Encoding: base64
Content-Location: http://c2.com/doc/oopsla89/fig5.gif
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------=_NextPart_000_0039_01C9A31C.C43BB970
Content-Type: image/gif
Content-Transfer-Encoding: base64
Content-Location: http://c2.com/doc/oopsla89/fig6.gif
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------=_NextPart_000_0039_01C9A31C.C43BB970
Content-Type: image/gif
Content-Transfer-Encoding: base64
Content-Location: http://c2.com/doc/oopsla89/fig7.gif
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------=_NextPart_000_0039_01C9A31C.C43BB970--