搜尋結果
1 天前 · Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
1 天前 · The viscosity of a fluid is a measure of its resistance to deformation at a given rate.[1] For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water.[2] Viscosity is defined scientifically as a force multiplied by a time divided by an area. Thus its SI units are newton-seconds per ...
1 天前 · Abortion is the termination of a pregnancy by removal or expulsion of an embryo or fetus. [nb 1] An abortion that occurs without intervention is known as a miscarriage or "spontaneous abortion"; these occur in approximately 30% to 40% of all pregnancies. [2] [3] When deliberate steps are taken to end a pregnancy, it is called an induced ...
2024年4月17日 · Enron scandal. The Enron scandal was an accounting scandal involving Enron Corporation, an American energy company based in Houston, Texas. When news of widespread fraud within the company became public in October 2001, the company declared bankruptcy and its accounting firm, Arthur Andersen – then one of the five largest audit and ...
3 天前 · The 1986 FIFA World Cup was the 13th FIFA World Cup, a quadrennial football tournament for men's senior national teams. It was played in Mexico from 31 May to 29 June 1986. The tournament was the second to feature a 24-team format. Colombia had been originally chosen to host the competition by FIFA but, largely due to economic reasons, was not ...
1 天前 · A display resolution standard is a commonly used width and height dimension (display resolution) of an electronic visual display device, measured in pixels. This information is used for electronic devices such as a computer monitor. Certain combinations of width and height are standardized (e.g. by VESA) and typically given a name and an ...
1 天前 · Infobox references. Sulfuric acid ( American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling ), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen, and hydrogen, with the molecular formula H2SO4. It is a colorless, odorless, and viscous liquid that is miscible with water.
