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问题 单项选择题 A1/A2型题

急性心肌梗死的发病机制中正确的是（）

A.心肌急性严重缺血5分钟以上

B.多数由于不稳定粥样斑块溃破出血和管腔内血栓形成

C.只发生在频发心绞痛的患者

D.无心绞痛者不会发生急性心肌梗死

E.不会伴发严重心律失常

答案

参考答案：B

填空题

One who watches TV often feels that whatever (11) in the film could well happen to him. At her friend’s, Jane had been enjoying a spy film in which a young girl had been followed and murdered. Now she was walking to the station, feeling a little (12) . She took the train back to the center of the city where there were lots of people, and she felt much safer. She thought of nothing until she found a man nearby staring at her. Feeling very (13) she got out of the train and went to the bus stop. (14) had she taken a seat than she found herself still followed. After getting off, she heard footsteps behind her but dared not turn round before she felt a hand on her shoulder and heard a pleasant voice "I’d apologize if I frightened you. I’m your new neighbor. I thought I (15) you in train, but I wasn’t so sure.\
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单项选择题

反映叉车的过性的参数是（）

A、最小离地间隙

B、转弯半径

C、最小转弯半径

D、轴距
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