通过对机械设备的危害因素进行全面分析,采用智能设计手段,使机器在整个寿命周期内发挥预定功能,保证误操作时机器和人身均安全。上述概念较完整地反应了现代机械安全原理关于机械安全特性中的()。
B
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Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
Thejudgewhowas________tohisfavoritewascriticizedbymanypeople.
is,are,was,were,itself,himself,themselvesThetradeunion________believedtoregard________asanorganizationwherethemolestedcouldseekadviceandhelp.
You’llbetheretomorrow--youwon’t________me________,willyou?