密码学的基本原则是 (59) 。传统加密算法中，替代密码是 (60) 。换位密码是 (61) 。
（59）处填（）。| Talk to any parent of a student who
took an adventurous gap year (a year between school and university when some
students earn money, travel, etc. ) and a misty look will come into their eyes.
There are some disasters and even the most motivated, organized gap student does
require family back-up, financial, emotional and physical. The parental
mistiness is not just about the brilliant experience that has matured their
offspring; it is vicarious(引发同感的) living. We all wish pre-university gap years
had been the fashion in our day. We can see how much tougher our kids become;
how much more prepared to benefit from university or to decide positively that
they are going to do something other than a degree. Gap years are fashionable, as is reflected in the huge growth in the number of charities and private companies offering them, Pictures of Prince William A. The example Prince William set in Chile. B. The blurbs of gap companies. C. The growth of the number of charities and private companies. D. The intervention of parents. [单项选择]男性，38岁。低热，乏力2年，近半年四肢关节、肌肉酸痛，登3楼困难，同时在上眼睑、出现红色皮疹，吞咽硬食困难。体检：眼睑周围水肿，眼睑、鼻梁、面颊、远端指间关节及甲周皮肤有暗紫色红斑，根据上述检查，给予肾上腺皮质激素治疗，疗程1.5年。病人上述症状无改善，肌无力更加严重，行走困难，但肌酶谱、肌电图均明显好转，此时可能原因与最佳处理是
A. 诊断错误，停用激素治疗 B. 诊断正确，有激素引起肌病可能，激素减量，继续观察 C. 诊断正确，继续原剂量治疗并加用CTX D. 诊断正确，激素剂量不够，加大剂量 E. 诊断正确，激素疗程不够，原剂量继续治疗 [多选题]下列器具的工作原理与涡流有关的（ ）。
A.家用微波炉 B.家用电磁炉 C.变压器铁芯用多块硅钢片粘在一起 D.风扇转动发热 [判断题]企业或者项目负责人承担过类似工程，类似工程业绩企业或者项目负责人仅可分别选1个。
A.正确 B.错误 [判断题]借款人王某户口在北京，目前在我行已在供一套商品房，其还可以通过拍卖再向我行办理拍卖贷业务。
A.正确 B.错误 [判断题]目前，我国对涉及国家秘密的工程如何进行保密管理已经有统一规定，有关法律对涉密采购也作了详尽的规定。
[多选题]变压器按结构分为()变压器。( )
A.双绕组变压器 B.三绕组变压器 C.多绕组变压器 D.自藕变压器 [单项选择] 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。
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