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【单选题】
当预制构件中钢筋的混凝土保护层厚度大于( )时,钢筋的混凝土保护层采取有效的构造措施。A.
20mm
B.
30mm
C.
40mm
D.
50mm
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【简答题】My name is Jim. My favorite day is October l8th, because it's my birthday. I am very happy on that day. I eat eggs for breakfast. Then my friends come to my home and play with me. We sing and dance. S...
【单选题】一角接触球轴承内径为85mm,公称接触角为15°,宽度系列为O,直径系列为 3 ,公差等级为 6 级,游隙为 0 组,其代号为 。
A.
7317B/P6
B.
7317C/P6
C.
7317AC/P6
D.
7385C/P6
【单选题】I am very happy to declare that this year's sales target ahead of time.
A.
achieved
B.
has achieved
C.
has been achieved
D.
had been achieved
【简答题】阅读理解 Dear Wat, I was so glad to get your mail. I am very happy that you can attend my birthday party at my home. It's easy to find my home according to the map I drew for you. Drive past the Science M...
【单选题】一角接触球轴承,内径85mm,宽度系列0,直径系列3,公称接触角15°,公差等级6级,其代号为( )。
A.
7317B/P6
B.
7317AC/P6
C.
7385C/P6
D.
7317C/P6
【单选题】I am very happy to declare that this year's sales target ahead of time.
A.
achieved
B.
has achieved
C.
has been acheived
D.
had been acheived
【单选题】CIRCUMVENTION:
A.
direct speech
B.
requirement
C.
direct meeting
D.
without concentration
E.
chief method
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