搜题请搜索小程序“爱下问搜题”
问题 单项选择题

根据美国统一商法典的规定，在合同已经部分履行时，但没有采用书面形式的（）。

A.该合同全部无效

B.已履行部分是否有强制力须依双方协商

C.已履行部分是否有强制力须依法院判决

D.已履行部分，仍具有强制力

答案

参考答案：D

多选题

如图所示，一带电小球在重力和匀强电场对它的作用力作用下，从A点沿曲线运动到B点，已知小球带带电量满足qE=mg，小球的在A点的速度与水平方向45°，则下列结论正确的是（　　）

A．此小球带负电

B．小球做匀加速曲线运动

C．电场力对小球做的总功等于零

D．小球的速度大小变为A点的

5倍
查看答案
单项选择题

Why is（71）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（72）nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes （73）, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The（74）, 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（75）, 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