【判断题】同一周期随原子序数的增加,在过度元素中,原子半径递减缓慢。有些相邻元素的性质很相似。
【判断题】“书初无意于佳,乃佳尔。”为黄庭坚所说。
【单选题】听力原文:W: Grace is so annoying, though she doesn't mean to hurt anybody. She is always correcting other people. She thinks she is a know-it-all. M: I feel the same way, Though sometimes her comments are...
D.
Intelligent but annoying.
【简答题】补画左视图,并求出点的另外两个视图的投影
【判断题】分光计调节中,平行光管狭缝的像与望透镜的测量叉丝重合,那么平行光管调焦好了。