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【多选题】
发动机包括以下哪些组成部分（ ）A.
曲柄连杆机构
B.
配气机构
C.
燃料供给系统
D.
润滑和冷却系统
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反馈参考答案：
举一反三
【单选题】听力原文：M: I'm afraid I've got to be going now. I have to get up very early tomorrow morning. You know I will see my grandmother off at six a. m. at the airport. W: I won't keep you then. It was nice of ...
A.
He will drive his grandmother to the airport.
B.
He will meet his grandmother at the airport.
C.
He will send his grandmother to a wedding party.
D.
He will take his grandmother to the hospital.
【单选题】直线l过原点(0,0),且不过第三象限,则l的倾斜角α的取值范围是( )
A.
O度≤α≤90度
B.
90度≤α<180度
C.
90度≤α<180度或α=0度
D.
90度≤α≤135度
【单选题】听力原文：M: I have such a bad ear infection that I won't be able to come to the final exam this afternoon. W: Only your instructor can tell you what to do in this situation. Q: What does the woman mean? (...
A.
The man shouldn't attend the exam.
B.
The man should ask his instructor's opinion.
C.
Only a doctor can tell him what to do.
D.
The instructor won't watch the students in the exam.
相关题目：
【单选题】直线l过原点(0,0),且不过第三象限,则l的倾斜角α的取值范围是( )
A.
O度≤α≤90度
B.
90度≤α<180度
C.
90度≤α<180度或α=0度
D.
90度≤α≤135度
参考解析：
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