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【单选题】
共集电极放大电路的输出电压和输入电压相位差为(  )。
A.
0;
B.
900;
C.
1800 ;
D.
不确定;
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【多选题】下列选项中属于无产阶级报刊的发展轨迹的是
A.
工人报刊
B.
无产阶级政治报刊
C.
工人党报
D.
无产阶级政党报刊
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【单选题】本初子午线是指( )。
A.
0 º 经线
B.
45 º 经线
C.
180 º 经线
D.
90 º 经线
【单选题】本初子午线是指()
A.
赤道
B.
0°经线
C.
180°经线
D.
20°W经线
【单选题】____________ fall, I like to play in the wind. [     ]
A.
In
B.
On
C.
At
【单选题】本初子午线是指(  )
A.
0经线
B.
30经线
C.
90经线
D.
180经线
【判断题】优化业务链、财务联都对公司系统没有什么要求
A.
正确
B.
错误
【简答题】Every fall, like clockwork, Linda Krentz of Beaverton, Oregon, felt her brain go on strike. “I just couldn’t get going in the morning,” she says. “I’d get depressed and gain 10 pounds every winter and...
【单选题】钢筋一般在结构中主要承受的力是哪种力?
A.
拉应力
B.
压应力
C.
剪应力
D.
扭应力
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