【单选题】客户在购买的过程中,会提出许多相关的疑问,下列商品问题处理业务中属于产品适配度的是
【单选题】During the lecture, the speaker occasionally ___________ his point by relating his own experience.
【多选题】摄像机机身外表板上落有灰尘或凝结有水汽时,不能使用:
【简答题】金属镁的制取主要有两种途径,大约60%的镁是从海水中提取的,其余来自于含镁丰富的矿石,比如菱镁矿(主要成分为MgCO 3 ).从不同途径获得镁的流程如图所示: 回答下列问题: (1)试剂a的化学式是______. (2)加入试剂b发生反应的离子方程式是______. (3)操作A是蒸发浓缩、冷却结晶、______. (4)在电炉中参加反应的n(Cl 2 ):n(焦炭)=1:1,则该反应的化学方程式...
【多选题】摄像机机身外表面板上落有灰尘或凝结有水汽时,不能使用
【简答题】制冷的方式主要有两种,即________和_________。
【单选题】______, the speaker interrupted his lecture.
A.
His voice was drowned by the noise
B.
His voice being drowned by the noise
D.
His voice drowned by the noise
【单选题】During the lecture, the speaker occasionally( )his point by relating his own experiences.
【单选题】His deliberately ______ remarks of the Blacks' contribution to the music in his lecture resulted in the prompt protest among the audience.
【多选题】摄像机机身外表面板上落有灰尘或凝结有水汽时,不能使用