比较下 * * 角函数值的大小:sin40°______cos40°(选填“>”、“=

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问题:

比较下 * * 角函数值的大小:sin40°______cos40°(选填“>”、“=”、“<”).

考点:锐角三角函数的定义
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情景交际。
     根据对话内容,从对话后的选项中选出能填入空白处的最佳选项.选项中有两项多余选项。
— Debbie!I can't believe it!I haven't seen you for ages.  
— Dorothy!it's really a nice surprise!   1     
— Pretty good.  
—    2    
— I wish I could. But I'm on my way out. I have to be in the city in an hour.  
—   3    
— There's a lot of traffic and I really have to get going. You know where I live
— Why don't you drop in one evening?  
— I'll do that.   4   let's keep in touch.  
— I'd really like to. I'll talk to you soon, Debbie. I'm glad I ran into you.   
   5   
A. Take care.  
B. How are you?  
C. Where have you been?  
D. Can you join me?  
E. Come on. Just for a minute.  
F. And you should feel free to call or visit me.  
G. It's been a whole year since we saw each other last time.  
题型:填空题

施工图上的管件和()多数采用规定的图例表示。

A.阀门

B.截断阀

C.阀件

D.闸阀

题型:填空题

凡是用绝缘物隔开的两个导体的组合就构成了一个()。

A、电源

B、电阻

C、电感

D、电容器

题型:填空题

男性患者,34岁,体检时发现一度房室传导阻滞,其他均正常,该患者查体可见

A.S1减弱
B.S1增强
C.S2通常分裂
D.收缩早期喷射音
E.S1分裂

题型:填空题

哪个舵面没有调整片()

A.副翼

B.方向舵

C.升降舵

D.副翼和升降舵

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