【简答题】如果是总体研究,对( )要有具体说明。如果是抽样研究,则要说明( )和( )。
【单选题】若F(x)是f(x)的一个原函数,则下列函数中( )仍是f(x)的原函数,其中C为常数.
【单选题】下列哪一个不是面向对象程序设计语言的特点?
【简答题】Samsung forecast beats estimates despite scandals and fires 7 April, 2017 Edited Samsung Electronics is on track to report record annual earnings, despite its de-facto boss going on trial in a politic...
【判断题】使用Maka制作H5可以使用表单,并在后台数据库中查看数据并导出。
【多选题】关于班轮运输的描述,正确的有( )。
C.
承运人在装卸港的码头或仓库接受货物或交付货物且负责装卸和理舱
D.
承运人和货主之间不规定装卸时间,也不计算滞期费和速遣费
【单选题】C Sometimes, the simplest ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, black surfaces. One way to do that is to build those surfaces specially, on ...
A.
Arian de Bondt got his idea from his boss.
B.
Large, flat, black surfaces need to be built in cities.
C.
The Dutch engineer's system has been widely used.
D.
Heat can also be collected from asphalt roads.