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问题 单项选择题 A1/A2型题

诊断肉瘤的主要根据是（）

A.切面呈鱼肉状

B.青少年多见

C.肿瘤出血、坏死

D.恶性瘤细胞弥散分布，瘤细胞间有网状纤维穿插包绕

E.瘤细胞异型性明显，有病理性核分裂

答案

参考答案：D

判断题

柴油机由静止状态进入工作状态，必须借助外力，克服启动阻力，转动曲轴。柴油机所借助的外力一般有两种，气动力和电动力。
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单项选择题

All known techniques for handling complex problems successfully seem to fall into one of the three classes: subdividing the problem (51) , ignoring irrelevant detail in a safe way (52) , and having an independent agent (53) the internal consistency (contextual checking). The first two provide guidelines for solving the problem, the third serves to provide early warnings. A good programming language supports all three.
In subdividing problem, some of the subproblems may be similar to the (54) problem. It leads us to a (55) solution. This (55) solution is viable provided each of the subproblems is easier to solve than the original problem.

A. check B. original C. perform D. recursive
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