【多选题】下面哪些信息可以联合确定化合物中有苯环存在( )
【单选题】有关公路工程施工计量与支付的表述中,按合同规定对承包人的应付款项进行确认并办理付款手续的过程,指的是
【单选题】— Jack, you look tired today. — Yes, actually I've been _____ busy these days _____ I can't get enough sleep. [ ]
【多选题】下面哪些信息可以联合确定化合物中有苯环存在( )
A.
在 1750~42000px -1 有强吸收峰
B.
在 3100~75000px -1 有吸收峰
C.
在 3500~80000px -1 有强吸收峰
D.
在 1600~37500px -1 有 2~3 个吸收峰
【单选题】听力原文:W: Jack, it doesn't look like you've vacuumed the living room or cleaned the bathroom. M: No, I haven't. I had the worst day. I am so tired. Q: What can we learn from the conversation? (13)
A.
Jack vacuumed the living room but not the bathroom.
B.
Jack cleaned the bathroom but not the living room.
C.
Jack cleaned neither the living room nor the bathroom because he is exhausted.
D.
Jack cleaned both the living room and the bathroom.
【判断题】不同的媒体,会使用不同的镜头定义,例如,电影的画面大,定义时不同类型的镜头就多,电视画面小所需要使用的镜头类型就少,通常电影拍摄的镜头类别有 9 种,电视拍摄的镜头类别有 5 种,手机端可能会更小。
【判断题】我国是最大的服装加工基地,服装产业欠缺的不是质量,而是国际品牌。
【单选题】What's wrong ____________ you, Jack. You look ill. [ ]
【单选题】—Jack, you look very tired today. —Yes, actually I've been _____ busy these days _____ I can't get enough sleep. [ ]