自阀操纵列车制动时,机车制动缸最大压力可达到()Mpa。
A、0.6
B、0.5
C、0.3
D、0.45
参考答案:D
(二) 根据下面一段话的内容,从方框内的7个选项中选出能填入空白处的最佳选项,其中有两项为多余选项 A: Excuse me.(16)B: Yes. You don’t know me, of course. I don’t teach here. I just give oral examinations here now and then. Don’t be nervous. A: Nervous Who Me B: (17)I’m going to ask you a few questions. Then we are going to have a short conversation in English. Do you understand A: Yes, of course I do. (18) B: After the examination, please. First of all, why are you learning English A: Why am I learning English B: Yes, I mean, what are you going to do with it Are you going to be a teacher of English, or what else A: (19)I really must ask you something first. B: Very well. If you insist, go ahead please! A: Would you like a cup of coffee B: Pardon What did you say A: You see, I’m English. I’m one of the teachers here. I came to ask you if you would like a cup of coffee. B: (20). And thank you so much!
第一空应选择()
A.You must have wronged me.
B.Oh! I’m so sorry about this.
C.Please stop just a second.
D.Are you Mr.Smith
E.But may I ask you something first
F.Is there anything I can do for you
G.Now. Sit down, please.
引起骨质破坏的病变有()
A.骨折
B.骨结核
C.骨髓炎
D.纤维异样增殖
E.骨髓瘤