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In single-line working, signals are usually provided for the right-direction of travel but not in the wrong-direction. [1] The worst safety risk is a head-on collision between two trains travelling in opposite directions, but there is also the risk of a rear-end collision if two trains travel simultaneously over the line in the unsignalled ...
Examples of single line tokens: Tablet on left, key token on right. The operation of a bidirectional single track line has the hazard of two trains colliding. The simplest way to prevent such collisions is to have only one train in the section at any given time. Such a system is known as "one-engine-in-steam” (OES) or “one-train working ...
Single-line may refer to: Inflatable single-line kite, one of the few modern inventions in the world of kite design; Single-line diagram, a simplified notation for representing a three-phase power system in power engineering; Single-line working, the practice of using one track out of two on a double track railway; Single-track railway
Most languages support multi-line block (a.k.a. stream) and/or single line comments. A block comment is delimited with text that marks the start and end of comment text. It can span multiple lines or occupy any part of a line. Some languages allow block comments to be recursively nested inside one another, but others do not.
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The One Time It's Best To Say "I'm Busy" All of the above responses are great swaps for "I'm busy," but Dr. Cooper says there's one time when the phrase is the best one to go with.
That was nearly 22 years ago, but it seems like only last week that my brother Adam, his wife Val, and I stood by her beside saying our goodbyes. It was such a bittersweet moment.
A typical one-line diagram with annotated power flows. Red boxes represent circuit breakers, grey lines represent three-phase bus and interconnecting conductors, the orange circle represents an electric generator, the green spiral is an inductor, and the three overlapping blue circles represent a double-wound transformer with a tertiary winding.