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【简答题】
Naming the simple alkanes below:
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举一反三
【单选题】在N不变的前提下,非均匀量化与均匀量化相比
A.
大、小信号的量化信噪比均不变
B.
大信号的量化信噪比提高
C.
小信号的量化信噪比提高
D.
大小信号的量化信噪比均提高
【单选题】—I came to your home yesterday afternoon, but nobody was in. — Oh, we ________ some shopping in the supermarket. [ ]
A.
have done
B.
did
C.
were doing
D.
are doing
【单选题】— I came to your office yesterday morning, but nobody was in. — Oh, we _____a meeting in the meeting room. [ ]
A.
have had
B.
had
C.
were having
D.
are having
【单选题】--- Believe it or not, I ______ an old friend of mine while abroad. --- Oh, it’s a small world.
A.
came up
B.
came out
C.
came across
D.
came about
【单选题】某物业大厦,生活水泵配电控制运行正常,但在自动给水系统中不能启动,有可能是监控系统中下列哪个设备出问题
A.
低水位启泵传感器
B.
高水位停泵传感器
C.
溢流水位传感器
D.
超低水位传感器
【单选题】- I came to your home yesterday afternoon, but nobody was in. - Oh, we ________ some shopping in the supernarket. [ ]
A.
have done
B.
did
C.
were doing
D.
are doing
【单选题】某物业大厦，生活水泵配电控制运行正常，但在自动给水系统中不能启动，有可能是监控系统中下列哪个设备出问题()。
A.
低水位启泵传感器
B.
高水位停泵传感器
C.
溢流水位传感器#3超低水位传感器
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