中东能源冲击带来的五大重要启示

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Postgres can use a GIN (generalized inverted) index for the tsvector text search predicate and a B-tree for ordering or numeric filters. But because GIN does not preserve ordering and Postgres cannot combine ordering guarantees across different indexes, the planner must decompose the query into phases:

As evidence, the group points to the last two major downturns. The Great Recession added roughly 35 percentage points of GDP to the national debt. The pandemic response added another 20 points. In neither case did Washington subsequently rein in its borrowing once the immediate danger passed. The result is a structural deficit that now operates as a permanent feature of the federal budget rather than a temporary response to crisis.​,这一点在新收录的资料中也有详细论述

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The KEF Muo can be positioned vertically or horizontally, there’s knobbly rubber feet on the horizontal, and you get removable carrying strap. In truth, I wasn’t fully blown away by the design, partly because I expect a high level of finish on a premium product, partly because there’s some gorgeous alternatives out there, but mostly because it’s almost identical to the original. Back in 2015 having a designer like Ross Lovegrove involved caught headlines outside hi-fi circles, these days it’s almost de rigueur.

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