Estimates indicate that the aquifer contains enough water to fill Lake Huron, but unfortunately, under the semiarid climatic conditions that presently exist in the region, rates of addition to the aquifer are minimal,amounting to about half a centime…

The vast grasslands of the High Plains in the central United States were settled by farmers and ranchers in the 1880s. This region has a semiarid climate, and for 50 years after its settlement, it supported a low-intensity agricultural economy of cat…

In the face of the upcoming water supply crisis, a number of grandiose schemes have been developed to transport vast quantities of water by canal or pipeline from the Mississippi, the Missouri, or the Arkansas rivers. Unfortunately, the cost of water…

Origin mosfet 除了有 n channel 及 p channel 外, 還分為 enhanced 及 depletion 兩種, 引起我注意的是, depletion 代表什麼, Explanation 以 p-channel mosfet 為例, 基體是 n 型, channel 是 p 型, depletion 有一個特色是尚未加上 Vgs 時,就已有 channel,常開, Vgs加上負電壓,在基體上會感應 p 到 channel 上,channel 會更大, 若 Vgs 加…

20150729 Created By BaoXinjian…

第四部分     推理题 1.世界上每个角落的每个人都有立场,都有背景,都有推理性,能推理出一个人语言的真意,才成就了真正的推理能力: 2.换言之,如果你能通过一个人的说话推理出其身份职业,你的推理能力更上一层楼. 一 . 临门一脚 1. “I believe in human ingenuity – that when we decide on a task to be done, no matter how daunting it may seem at the beginning, we…

Transistor Tutorial Summary Transistor Tutorial Summary Bipolar Junction Transistor Tutorial We can summarise this transistors tutorial section as follows: The Bipolar Junction Transistor (BJT) is a three layer device constructed form two semiconduct…

http://www.codemachine.com/courses.html#kerdbg Windows Kernel Internals for Security Researchers This course takes a deep dive into the internals of the Windows kernel from a security perspective. Attendees learn about behind the scenes working of va…

一.python小知识 1.python中无模块作用域 Java /c# 不可以, Python.javascript 可以 for i in range(10): name = i print(i) #输出9 2.python是以函数作为作用域 #2.python中是以函数作为作用域: def foo(): name = "lcj" print(name) foo() #执行函数foo() #输出lcj 小知识3:作用域链接,由内向外找,直到找不到就报错 #作用域链接,由内向外找,直…

61. You are working in an online transaction processing (OLTP) environment. You realize that the salary for an employee, John, has been accidentally modified in the EMPLOYEES table. Two days ago, the data was in the correct state. Flashback logs gene…