实现平版印刷原理的基本条件是：先上墨后上水，使印版选择性吸附油墨和润湿液，保证平印油墨转移正常进行。
A. 对
B. 错
It will be a close game. The outcome is hard to____.
Travelers on a____would choose to go there by train instead of by plane.
These figures show that the____of road accident gets higher as the speed of the car increases.
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