【简答题】室内色彩可概括分为三大部分:背景色、( )和 ( ) 。
【简答题】室内色彩可概括分为三大部分:()、()和()。
【简答题】Refer to Figure 3.8 in the text, calculate relative mass of β and α in eutectic alloy in eutectic phase diagram Pb-Sn at temperature just lower than 183°C and room temperature.
【简答题】Refer to Figure 3.8 in the text,calculate relative mass of three microstructure of α(primary phase),βII and(β+α)Ein 40% Sn Pb-Sn alloy at room temperature.
【判断题】从本质上讲,外汇储备是一种信用保证。()