摘要 |
<p>The cover leads-in are arranged to correspond to insertion fixtures on the base, and they are open or have breakable covers. One cover (3) has a sidewall (16) which has symmetrically arranged leads-in (17) which are fitted in line with the base (2) insertion fixtures (5) the two outer leads-in have breakable covers, while the central lead-in (17) is open. There is a breakable cover (12) which is provided on the base (2), fitting the open lead-in (17).</p> |