Problem: Some people argue that elevators began as simple rope or chain hoists (see Traction elevators below). An elevator is essentially a platform that is either pulled or pushed up by a mechanical means. A modern-day elevator consists of a cab (also called a "cage", "carriage" or "car") mounted on a platform within an enclosed space called a shaft or sometimes a "hoistway". In the past, elevator drive mechanisms were powered by steam and water hydraulic pistons or by hand. In a "traction" elevator, cars are pulled up by means of rolling steel ropes over a deeply grooved pulley, commonly called a sheave in the industry. The weight of the car is balanced by a counterweight. Sometimes two elevators are built so that their cars always move synchronously in opposite directions, and are each other's counterweight.
How do elevators built in pairs work?
The answer is the following: their cars always move synchronously in opposite directions,

Problem: Situated between two large linguistic blocks (Ibero-Romance and Gallo-Romance), Catalan has many unique lexical choices, such as enyorar "to miss somebody", apaivagar "to calm down somebody", or rebutjar "reject".
What is the Catalan to miss somebody?
The answer is the following: enyorar

Problem: The Dutch written grammar has simplified over the past 100 years: cases are now mainly used for the pronouns, such as ik (I), mij, me (me), mijn (my), wie (who), wiens (whose: masculine or neuter singular), wier (whose: feminine singular; masculine, feminine or neuter plural). Nouns and adjectives are not case inflected (except for the genitive of proper nouns (names): -s, -'s or -'). In the spoken language cases and case inflections had already gradually disappeared from a much earlier date on (probably the 15th century) as in many continental West Germanic dialects.
Over what span of time have the rules for written Dutch become less complicated?
The answer is the following: 100 years

Problem: In the religious sphere, this was a period of profound change. The spiritual revolution that took place, saw a waning of the old Greek religion, whose decline beginning in the 3rd century BC continued with the introduction of new religious movements from the East. The cults of deities like Isis and Mithra were introduced into the Greek world. Greek-speaking communities of the Hellenized East were instrumental in the spread of early Christianity in the 2nd and 3rd centuries, and Christianity's early leaders and writers (notably St Paul) were generally Greek-speaking, though none were from Greece. However, Greece itself had a tendency to cling to paganism and was not one of the influential centers of early Christianity: in fact, some ancient Greek religious practices remained in vogue until the end of the 4th century, with some areas such as the southeastern Peloponnese remaining pagan until well into the 10th century AD.
What religions form of worship came from the Eastern sects ?
The answer is the following:
The cults of deities like Isis and Mithra were introduced into the Greek world.