フリー問題

問題文

A sweep taken in the loading bay of the cold store records the noise floor at a level well above the receiver sensitivity of the planned nodes. Which pair states what that noise floor bounds and what the same sweep leaves out?

選択肢

1. The reading covers energy without owners, so the noise floor bounds the usable current and the same sweep excludes the shared backgrounds in that documentation.
2. The reading covers energy without owners, so the noise floor bounds the usable headroom and the same sweep excludes the shared backgrounds in that documentation.
3. The reading covers energy without owners, so the noise floor bounds the usable headroom and the same sweep excludes the shared airtime in that documentation.
4. The reading covers energy without owners, so the noise floor bounds the usable current and the same sweep excludes the shared airtime in that documentation.