【判断题】在switch和if...else之间进行选取,当控制选择过程的条件不仅仅依赖于一个值时,应该使用switch结构。
【简答题】设 是数列 的前 项和, , . ⑴求 的通项; ⑵设 ,求数列 的前 项和 .
【单选题】世纪之交,创造性地回答了“建设一个什么样的党和怎样建设党”这一问题的重大理论成果是
【简答题】设函数 (1) 设 , ,当 时,求 的单调区间和值域; (2)设 为偶数时, , ,求 的最小值和最大值.
【单选题】Drivers on the Basingstoke by-pass used to have their attention diverted by a sign that reads A MOMENT'S INATTENTION CAUSES ACCIDENTS. This self-defeating warning has now been removed, but its message...
A.
it will make a driver wait at the scene
B.
it will distract the driver's attention
C.
it is too difficult to understand
D.
it is too long to be read by drivers
【单选题】下列与大连接体有关的叙述错误的是
C.
大连接体主要有腭杆、舌杆、腭板、舌板、唇杆等
D.
为保证边缘封闭性,大连接体边缘应和龈缘紧密接触
E.
连接杆的长度增加,弹性增加,应增加连接杆厚度
【单选题】谷类是我国人民膳食能量的主要来源,但其主要的缺陷是:
【单选题】At the end of an hour ’ s play the________ lay definitely with him.