Can I use adapted lenses on the panasonic lumix gx7?

Here is what the site says about that.

From Panasonic Lumix GX7: Panasonic Lumix GX7: A mirrorless camera by Panasonic with a 16-megapixel Micro Four Thirds sensor, announced in 2013. Specs - Maker: Panasonic - Mount: Micro Four Thirds - Sensor: Micro Four Thirds, 17.3 x 13mm, crop factor 2.0 - Resolution: 16 megapixels - Stabilisation: in the body - Announced: 2013 - Type: mirrorless camera Focal lengths on it Lenses frame like 2.0 times their focal length on full frame: 12mm like 24mm, 18mm ...

From Sensor sizes: The main sizes: - Full frame (36 x 24mm, the size of a 35mm film frame). The reference size: when people quote a focal length "in full-frame terms", this is what they mean. - APS-C (about 23 x 15mm). Crop factor about 1.5x (1.6x on Canon). Most entry and mid-range mirrorless cameras. - Micro Four Thirds (about 17 x 13mm). Crop factor 2x. Small, light systems from OM System and Panasonic. - 1-inch ...

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