[定位] 根据题干中的the principal constituent of natural gas定位到第一个小标题下的第三段第一句Natural gas consists primarily of methane(沼气)and other hydrocarbon gases.[精解] 本题提问天然气的主要成分。题干中的the principal constituent of与原文中的consists primarily of属于同义转换,所以consists prima...
What is the principal constituent of natural gas?A.Carbon and hydrogen.B.Methane and other hydrocarbon gases.C.Saturated hydrocarbons.D.Non-associated gas.的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工
Eye irritation assessment is compulsory to anticipate health risks in military personnel exposed to riot control agents such as capsaicin, the principal constituent of oleoresin capsicum, or pepper sprays. The present work investigates certain fundamental yet unaddressed pharmacological manifestations on ocular...
the world over. The concept of HEAs was reported by Yeh et al.6, who described that by blending five metallic elements together (or possibly, more than five elements) in approximately equiatomic proportions, then the attendant
which was much higher than the other constituent elements, and the corrosion resistance increased with increased Cr content in the alloys. As shown in Fig.2a, the alloys with higher Cr content atx = 1.5–2.0 exhibited no breakdown potential under anodic polarization up to 2.0 VSCEin the ...
The trend reflects the long-term movement of Y, the seasonal corresponds to a pattern with known periodicity and the error is the uncertain, unpredictable constituent of the series. In a purely additive model we have: Y = T + S + E or Y = S + T, while in a pure multiplicative ...
which were applied in this study. This was made possible through the sintering of the alloys in a short period at temperatures below the respective melting temperatures of the constituent elements of the alloys. The advantage of the SPS means of production in this study is that it helps and ...
its primary constituent was the bicyclic sesquiterpene β-caryophyllene (18.94%). This compound is known for its strong medical value, including anti-inflammatory and analgesic properties [35]. Collectively, while the main constituents of the EOs from the fourCinnamomumspecies were terpenoids, the spec...