To provide an article storage structure for a small boat in which the forward visibility of the small boat can be increased substantially and the center of gravity of the small boat can be lowered. The switch is formed by first and second tubular housing members relative rotatable to close the air valve means and simultaneously to connect the battery circuit to the lamp. The order of test items included in the normal test can be changed based on defect rates. The first indicator indicates which TDMA is an in-use TDMA, and the second indicator indicates whether or not the recording medium is closed. An electric field is generated using low and high frequency RF power to produce a plasma discharge in the reaction zone to cause the deposition.