表示单刀单掷开关。可指定开关为断开或接通。

Represents a single-pole, single-throw switch. Switch can be specified as open or closed.

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表示双刀单掷开关。可指定断开和闭合位置。

Represents a double-pole, single-throw switch. Open and closed positions can be specified.

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表示双刀单掷开关。右击指定断开或闭合位置。

Represents a double-pole, single-throw switch. Right-click for open and closed positions.

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