Traditionally, selection controls do not directly result in actions-they require an imperative control to activate.

以前，选择控件不直接导致操作，操作通常需要命令控件来触发。

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The GUI tools do not expose controls that enable selection of the certificate signing algorithm, and they default to MD5 signatures.

但GUI工具不能公开那些支持选择证书签名算法的控件，因此默认支持MD 5签名。

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The important question is who controls and oversees the selection, distribution and editing of released documents to the broader public?

重要的问题是，由谁来控制和监督选稿、分发和编辑那些向更广泛的公众披露的文件？

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Hardware controls include power, selection and volume up and down, while the smartglasses also gauge 3-degrees of freedom through head-tracking, alongside an integrated compass and GPS. The built-in camera is capable of 1080p video in 16:9 aspect ratio, although it'll be able to capture stills too.

ENGADGET: Vuzix Smart Glasses M100 hands-on at CES 2013 (update: now with video!)

Price-sensitive health services might also be interested in bundled deals for the broad selection of cancer and cardiovascular pills that Roche now controls.

ECONOMIST: Pharmaceutical takeovers

The government's answer to years of persistent inflation has been price controls and Mercal, a state-owned and subsidised grocery chain that offers a limited selection of staples at discounts of up to 40%.

ECONOMIST: Hard times on the streets of Caracas