过量空气系数α＞1，则此混合气称为（）混合气；当α＜0.4时，混合气（），火焰不能传 发布时间：2017-07-09 09:04 │ 来源：www.tikuol.com 题型：填空题 问题： 过量空气系数α＞1，则此混合气称为（）混合气；当α＜0.4时，混合气（），火焰不能传播，发动机熄火，此α值称为（）。
题型：填空题 阅读理解 Jim suffered heart problems. In conversation he expressed little joy and it seemed that his life was drawing to a close. When his heart problems led to an operation, Jim went through it successfully, and a full recovery was expected. Within days, however, his heart was not beating properly. Jim was rushed back to operation, but nothing was found to explain the cause of his illness. He died on the operating table on the day before his 48th birthday. Dr. Bruce Smoller, a psychologist, had had many conversations with him, and the more he learned, the stranger he realized Jim's case was. When Jim was a child, his father, a teacher, suffered a heart attack and stayed home to recover. One morning Jim asked his father to look over his homework, promising to come home from school at noon to pick it up. His father agreed, but when Jim returned his father had died. Jim's father was 48. "I think all his life Jim believed he killed his father," Dr. Smoller says. "He felt that if he had not asked him to look at his homework, his father would not have lived. Jim had been troubled by the idea. The operation was the trial he had expected for forty years." Smoller believes that Jim willed himself not to live to the age of 48. Jim's case shows the powerful role that attitude plays in physical health, and that childhood experiences produce far-reaching effect on the health of grown-ups. Although most cases are less direct than Jim's, studies show that childhood events, besides genes, may well cause such midlife diseases as cancer, heart disease and mental illness.1. Jim was rushed back to operation because .A. his heart didn't work wellB. he expected a full recoveryC. his life was drawing to a closeD. the first one wasn't well performed2. What made Dr. Smoller feel strange about Jim's case?A. Jim died at a young age.B. Jim died on the operating table.C. Both Jim and his father died of the same disease.D. Jim's death is closely connected with his father's.3. From Smoller's words, we can infer that .A. Jim's father cared little about his studyB. Smoller agreed that Jim did kill his fatherC. Jim thought he would be punished some dayD. Smoller believed Jim wouldn't live to the age of 484. Which of the following could have strong effect on one's physical health according to the text?a．One's genes. b．One's life in childhood. c．One's physical education.d．The date of one's birthday. e．The opinions one has about something.A. a c d B. a b e C. b c d D. c d e 查看答案
题型：填空题 —Tom almost ran into a pole yesterday while driving on the highway.—I suppose he too fast.A．had drivenB．was drivingC．drivesD．has driven 查看答案