问题
多项选择题
给排水工程中常用的阀门按阀体结构形式和功能,可分为()。
A、截止阀
B、闸阀
C、蝶阀
D、球阀
E、止回阀
答案
参考答案:A, B, C, D, E
给排水工程中常用的阀门按阀体结构形式和功能,可分为()。
A、截止阀
B、闸阀
C、蝶阀
D、球阀
E、止回阀
参考答案:A, B, C, D, E
日常对话
W: Hello, Han Lin. H: Hello, Xiao Hua. W: 小题1: H: I’m reading about today’s newspaper. It says every week students in primary schools have a day without homework. 小题2: W: I think it’s great. 小题3: H: That’s impossible. But after the big exam, we’ll also have a long summer vacation and needn’t do any homework. W: I’m looking forward to it. Have you made any plans for it? H: 小题4: I’m going travelling. But I haven’t decided where to go. W: 小题5: H: Good idea. I also hear Taiwan is a nice place. I’ll think about it. Thank you for your advice. W: It’s a pleasure. |