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问题:

[单选] ()是网络通信双方要完成通信所需要共同遵守的一系列规则和约定。

A . 介质
B . 网络拓扑
C . 协议
D . 以上都是

What would NOT require that a detailed report of the release of hazardous cargo be made to the Department of Transportation? () The valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open sea。 A carboy of nitric acid is broken on deck while loading and is flushed overboard with no injuryor damage。 Part of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazard。 Heavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system。 理财产品宣传材料应当全面、客观反映理财产品的重要特性和与产品有关的重要事实,语言表述应当真实、准确和清晰,必须包括以下内容() 产品收益类型,明确为保本保证收益型、保本浮动收益型、非保本浮动收益型。 产品流动性特征,明确为开放式、封闭式、半开放式(前端开放,后端封闭或前端封闭,后端开放)等。 明确产品预期收益率非产品到期实际收益率。 明确细化产品配置的各大类金融资产区间(或比重,如10%-20%),不得以0-100%等过于宽泛的数据区间表述。 原油稳定通常是利用在相同条件下,各组分的()不同这一原理。 凝固点。 析点。 气化程度。 溶点。 In using reduction gears to obtain efficient propeller speeds, (). they must be located at the after end of the engine。 they can only be used with one engine at a time。 they eliminate the need for controllable pitch propellers。 they are connected to the engine with a flexible coupling。 访问控制是指每个系统(),系统才允许他们访问。 都要确保只有它们想要的个体。 都要确保只有它们排斥的个体。 都要确保只没有它们想要的个体。 为零时。 ()是网络通信双方要完成通信所需要共同遵守的一系列规则和约定。
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