题目内容

影响路面结构温度状况的有外部和内在两种因素。

A. 对
B. 错

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[音频]Listen to the conversation and fill in the missing words. All answers are in lower case.My parents want me to study(01) , but I want to be a (02)artist.Graphic art jobs pay well. Do you know why they want you to do marketing, Anna?They think there will be more(03) jobs in marketing. They may be right.Graphic artists work in (04) design, gaming and advertising, and those jobs are all steady.Sure the jobs are steady, Peter, but there are fewer of them. AI is starting to take on many of the jobs.Maybe it could do the(05) work, but graphic artists have their own personal style. AI couldn’t create that, could it?What about Jack Qiao? He is one of the best and he is (06)to use AI.I heard that he has a program to choose the (07). You know, the style of letters that go together well.He’s gone beyond that now. He invented Brandmark. It uses AI to (08)brands for businesses.I read a(09) of some of the work Brandmark produced. It is good but it’s not great.But for many businesses, a good(10) that can be designed quickly and more cheaply is the best thing.Don’t you think there will always be companies that will pay for a good designer to create a logo and (11)?Yes, I think you’re right about that. I would still be (12) with machines for work. I would have to be very good at what I do.I think maybe the skills designers need are (13). You used to have to be talented with pen and paper, with drawing. Now many images are made on a computer.It’s time to re-think what a graphic artist is. The best ones are going to be good at using (14) .Probably at (15) , too. Jack Qiao had an idea for how AI could make his work better and built his own program.My parents probably have an (16)idea of what a graphic artist does. Their little girl won’t still be sitting in the park with her (17)book.It’s worth talking to them again. Studying technology and design could (18)you for an exciting career.

挤出机的流率为

A. Q=Qd+Qp-QL
B. Q=Qd+Qp+QL
C. Q=Qd-Qp-QL
D. Q=Qd-Qp+QL

挤出成型的主要工艺参数螺杆转数,下述叙述错误的是()

A. 螺杆转速的大小直接影响挤出机输出的物料量
B. 螺杆转速的大小决定有摩擦产生的热量,影响物料的流动性
C. 螺杆转速的调节与所加工的物料的种类无关
D. 螺杆的调速在挤出机生产线中的主机控制装置中调节

下列塑料管材中,耐热性能较优的是()。

A. HDPE
B. LDPE
C. PVC
D. PPR

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