搜题请搜索小程序“爱下问搜题”
问题 单项选择题

下列哪项符合胆道蛔虫病的早期体征

A．剑突右下方明显压痛，轻度肌紧张和反跳痛
B．剑突右下方明显压痛，伴寒热和黄疸
C．剑突右下方轻压痛，无肌紧张和反跳痛
D．剑突右下方明显压痛，显著肌紧张和反跳痛
E．剑突右下方明显压痛，肝区明显叩痛

答案

参考答案：C

填空题

物体的质量和速度都能影响物体的动能，在这两个因素中，_______对物体的动能影响较大。运送救灾物资的飞机在某一水平高度匀速飞行，当它把救灾物资投下时，它的重力势能将_______，动能将_______。
查看答案
单项选择题

Why is (21) fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the
(22) nature of the task. In one way or another the problem is ever new, and its solver learns something:sometimes (23) , sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The (24) , like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (25) , unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A．semantic

B．practical

C．lexical

D．syntactical
查看答案