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【单选题】
在自行车前轮的下面几处连接中,属于运动副的是( )A.
前叉和轴
B.
轴和车轮
C.
辐条和钢圈
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反馈参考答案：
举一反三
【简答题】如果循环次数在执行循环体之前就已确定,一般用____循环;如果循环次数由循环体的执行情况确定后,一般用____循环或者____循环。
【单选题】Like most married couples we've had our ( ), but life's like that.
A.
fortunes and misfortunes
B.
sound and safe
C.
scrimp and save
D.
ups and downs
【简答题】Most married couples in China are subjected to 1. ______________ , which is introduced in 1979 to curb 2. ______________ population growth. It is believed to have pred 3. ______________ births si...
【简答题】如果循环次数在执行循环体之前就已确定,一般用______循环; 如果循环次数是由
【单选题】若f=a*x^2+b*x+c是一个符号表达式,则symvar(f)的值是( )
A.
[a,b,c,x]
B.
[x,c,b,a]
C.
[x,a,b,c]
D.
[c,b,a,x]
【单选题】Like most married couples we ’ ve had our _______ , but life is always like that.
A.
determination
B.
sense
C.
ups and downs
D.
remark s
【单选题】下列符合西周时期社会经济现象的是( ) ①大量使用青铜农具 ②出现刺绣品 ③建立了邮驿传递制度 ④以贝作为货币 ⑤用漆工艺装饰车
A.
①②③④
B.
②③④⑤
C.
②③⑤
D.
①③⑤
【单选题】下列符合西周时期社会经济现象的是( ) 1大量使用青铜农具2出现刺绣品3建立了邮驿传递制度4以贝作为货币 5用漆工艺装饰车
A.
①②③④
B.
②③④⑤
C.
②③⑤
D.
①③⑤
【单选题】Like most married couples we've had our , but life's like that.
A.
ups and downs
B.
up and down
C.
up and downs
D.
ups and down
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