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【简答题】
[三盘清] 先在算盘上拨上 123456789,然后从高位加起,见几加几, 连加 3次,最后加9, 加完以后得数是______________ 。
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反馈参考答案：
举一反三
【单选题】what caused the car ahead of Jonda to slip into the Dalton River
A.
The car did not slow down
B.
The car had a braking problem
C.
The car was barely within the lane
D.
The car failed to stop at the warnming sign
【单选题】It is not known what caused the car to veer off the road and police investigations are being carried out.
A.
run off
B.
get down to
C.
crash into
D.
turn away from
【单选题】What caused the car ahead of Jonda to slip into the Dalton river?
A.
a
B.
b
C.
c
D.
d
【单选题】What caused the car ahead of Jonda to slip into the Dalton River?
A.
The car did not slow down.
B.
The car had a braking problem.
C.
The car was barely within the lane.
D.
The car failed to stop at the warning sign.
【单选题】What caused the car accident?
A.
Amy ran a stop sign which led the car to crash into a large truck.
B.
Amy continued into the intersection without stopping.
C.
The driver of a large truck, unable to brake in time, ran into our car.
【单选题】三相异步电动机的接线盒中六个接线端，可以改变三相定子绕组的接线方法，某点的铭牌上标有“额定电压280、220V，接法Y/△”，这是指( )。
A.
当电源相电压为220V，时，将定子绕组接成三角形，相电压为380V，接成星形
B.
当电源相电压为220V，线电压380V时，采用Y/△换接
C.
当电源相电压为380V时，将定子绕组接成星形，线电压为220V时，接成三角形
D.
当电源相电压为380V时，将定子绕组接成三角形，线电压为220V时，接成星形
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