关于脑血肿，下列说法正确的是（）。 A.急性血肿（0天-2天）血_爱下问搜题

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问题多项选择题

关于脑血肿，下列说法正确的是（）。

A.急性血肿（0天-2天）血肿中心在T₂加权像上出现低信号

B.亚急性初期（第3天）血肿外围在T₁加权像上出现高信号

C.亚急性中期（6天-8天）血肿在T₁加权像和T₂加权像上均可见高信号

D.亚急性后期（10天-14天）血肿周围在T₂加权像上呈现低信号环

E.慢性期（15天以上）逐渐呈长T₁、长T₂信号

答案

参考答案：A, B, C, D, E

完形填空

完形填空（共20小题；每小题1分，满分20分）
I was recently invited to dinner by a friend. During the meal, the manager of the restaurant came 16  and said that our meal was free. He stood there 17  at me and he seemed a little 18 to me but I couldn’t quite remember him. 19  I asked him if he knew me. He laughed and said I had probably 20  him, but that I’d changed his life. My friend was quite 21  and asked him how I’d done this.
He said that twelve years ago he   22  a stress（压力）management（管理）class that I was giving. I asked the group what their greatest 23  was and most of them, including him, said it was their bosses.
He said I listened   24  and then took a chair and placed it in the center of the room. I 25  on the chair for a few moments and then I   26  everyone to come and do the same. I wanted them to look at the room from up there. After everyone had done it, I asked the group to 27  how the room looked different when they changed their perspective（角度）.
Then I asked them to 28  their bosses. Was this the same person who had seen their good 29 and hired them? Did they remember how happy they were to be 30  for the job? But how did these wonderful people become terrible bosses?
He said I looked at him and asked if he had 31  said thank you to his boss for the 32  to earn a living. He answered he hadn’t. Then I asked him why he hadn’t tried being 33  to his boss.
He told us his 34  changed that night. He went back to work the next day with a thank-you card to his boss. He said I’d 35  him to look at life from different perspectives and express thanks.

A．Immediately

A．regretfully

B．disappointedly

B．think about

B．personalities

C．experiences

B．opportunity

单项选择题

一般矿物油能溶解6%～10%（体积）的空气，但当油品通过运行设备时，溶解的空气由于压力下降形成气泡，气泡滞留在油中与（）无关。

A.油品氧化；

B.产生振动和噪声；

C.降低泵出口压力；

D.产生油泥。