单项选择题

5.壁厚小、结构复杂的制品,熔体在型腔内流动阻力大,采用侧浇口难以填满或难以保证成型质量,应该采用点浇口进料。(    )
A、正确
B、错误

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听力原文:M: I want to see about getting a private room as soon as possiblE.Also, please put a 'No Visitors' signs on my door when you leavE.W: I'll take care of both things, but first I have to give you an examination so that I can fill out your chart.Q: Where is the man in the conversation?(17)A.At homE.B.In a hospital.C.In a dentist's officE.D.In a hotel.
A.W:
B.
Q:
C.At
D.
B.In
E.
C.In
F.
D.In
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听力原文:W: Here's this week's schedulE.On Monday, there's the board meeting. Your speech at the Lion's Club on Tuesday. Then, on Wednesday, you're supposed to see the dentist.M: I'm glad I don't have to travel to the business conference until next week.Q: What will the man do on Tuesday?(19)A.He must see the dentist.B.He must give a speech.C.He has a meeting to attenD.D.He must travel to a business conferencE.
A.M:
B.
Q:
C.He
D.
B.He
E.
C.He
F.
D.He
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