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【单选题】
现代精神医学史上最为重要的革命性事件是1953年_________抗精神病作用的发现和应用。A.
氯丙嗪
B.
氯氮平
C.
奥氮平
D.
碳酸锂
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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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