【单选题】Under the CIP, the seller must pay the freight rate and insurance premium as well as bear all the risks until the goods have arrived at the destination.
【简答题】Under CPT,the( )bears all risks and additional costs occurring after the goods have been so delivered.
【判断题】流感病毒是最容易发生抗原性变异的病毒。( )
【简答题】根据铁碳合金相图,解释下列现象: 1)在进行锻造时,常将钢材加热到1000~1250°C。 2)钢铆钉一般用低碳钢(ωc<0.2%)制作。
【简答题】在 1000 °C 时加热钢材,用 H 2 作保护气氛时, H 2 /H 2 O 不得低于 1.34 。否则 Fe 要氧化成 FeO ,如在同样条件下改用 CO 作保护气氛,则 CO/CO 2 应超过多少才能起到保护作用?已知此温度下反应: CO+H 2 O (g) == CO 2 +H 2 K Θ =0.7
【判断题】Under CIF, the seller assumes all risks of loss damage to the goods until they have passed the ship's rail ar the port of destination.
【判断题】化学反应 3A(aq) + B(aq) → 2C(aq) ,当其速率方程式中各物质浓度均为 1.0mol·L -1 时,其反应速率系数在数值上等于其反应速率。