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【多选题】
在通风和空调工程中,常用的风机有( ) 两大类。A.
离心式风机
B.
轴流式风机
C.
涡流式风机
D.
式风机
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反馈参考答案：
举一反三
【简答题】用 0 到 4 这 5 个数字,可以组成多少个没有重复数字的两位数?三位数?
【单选题】听力原文：M: I believe you have a 1982 Toyota for sale. W: That's fight. M: Can I ask you a few questions about it? W: Sure. What would you like to know? M: Well, what condition is it in? W: It's in good c...
A.
A 1983 Toyota.
B.
A 1982 Toyota.
C.
A 1983 Bens.
D.
A 1982 Benz.
【单选题】听力原文：Woman: I'm sorry I'm late again. I ran out of gas. Can you believe it? Man: You should take the bus. Then you wouldn't have to worry about gas or flat tires or anything like that. Or, even better...
A.
She slept late.
B.
She walked slowly.
C.
She took the bus.
D.
She ran out of gas.
【单选题】以下哪一项描述与紧密连接无关 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
．常靠近细胞的游离面 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
．可封闭细胞间隙 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
．可防止细胞内物质逸出 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
．具有保持机体内环境的稳定的功能 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
E.
．可与其他连接构成连接复合体 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
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