根据热固性塑料的固化特性,在一定的温度和压力成型条件下,交联反应完全结束,也就达到了固化成型了。
参考答案:对
阅读短文,根据短文内容,选择恰当的答案回答问题。
Dear Mummy,
How are you? I am fine at school. Tomorrow is National Day. We don't have to go to school. I am going
to take a trip with my friends in the morning. I am going to Zhongshan Park. I am going there by bike. It's near
our school. In the afternoon, I am going to the bookstore and buy some new books. In the evening, I am going
to watch TV. What are you going to do tomorrow? Can you tell me?
Your son,
Tom
1. What's the date tomorrow?
A. Oct. 1st
B. Nov. 1st
2. Where is Tom going on National Day morning?
A. The bookstore.
B. Zhongshan Park
3. How is Tom going to the park?
A. Ride a bike.
B. On foot
4. Is the park far from Tom's school?
A. Yes, it is.
B. No, it isn't.
5. What is Tom going to do in the bookstore?
A. Buy some new books.
B. Take a trip.
上面一组图像考虑为()
A.正常的右侧冠状动脉
B.正常的左前降支
C.右侧冠状动脉钙化
D.左前降支钙化
E.左旋支钙化