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【判断题】
成法切削渐开线齿轮时,模数为m、压力角为α的刀具可以切削相同模数和压力角的任何齿数的齿轮。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】A solenoid valve used in a refrigeration system should be installed （）.
A.
with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valve
B.
upright, sensing temperature of the box, and upstream of the thermal expansion valve
C.
upright, sensing temperature of the box, and downstream of the thermal expansion valve
D.
upright, sensing heat of the tail coil, and upstream of the thermal expansion valve
【简答题】指令( )用于取消宏定义
【单选题】In a starting circuit containing a solenoid, when is battery current supplied to the starter motor?
A.
When the remote control switch is closed
B.
At the time the ignition switch is turned to the start position
C.
After the starter pinion is engaged with the flywheel
D.
When the plunger closes the contacts in the solenoid
【简答题】starter solenoid____________________
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