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【单选题】
进餐时,西餐里的餐巾一般是放在哪里的?A.
膝盖上
B.
水杯里
C.
桌面上
D.
盘子里
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】If you see someone fall overboard from a ship，you should ().
A.
immediately jump in the water to help the individual
B.
call for help and keep the individual in sight
C.
run to the radio room to send an emergency message
D.
go to the control room for the distress flare
【多选题】对于同相比例运算电路,下面说法正确的是( )。
A.
输入信号连接到同相输入端
B.
反馈电阻连接在输出端和同相输入端之间
C.
输出电压的相位与输入电压信号的相位相同
D.
电压放大倍数等于反馈电阻与同相端输入电阻的比值
【单选题】对于同相比例运算电路，若闭环放大倍数Af=100，饱和电压为正负15V，输入信号为ui=1V，则输出信号为（ ）。
A.
15V
B.
100V
C.
-15V
D.
-100V
【单选题】If you see someone fall overboard from a vessel，you should ().
A.
immediately jump in the water to help the individual
B.
call for help and keep the individual in sight
C.
run to the radio room to send an emergency message
D.
go to the control room for the distress flares
【简答题】丢失"三包"凭证和发货票，怎样证明购买的农机产品在三包有效期内？
【简答题】To the finalists, APeter and I, the last Bhigh jump was Cthe most exciting Das well as the most difficult.
【单选题】_______ a 2% revaluation of the country' s currency last year, the big jump came.
A.
In spite of
B.
Although
C.
However
D.
Nevertheless
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