（）is the most visible signal of distress from a lifeboat at sea in the daytime.
A
举一反三
- 163．When using a hand held smoke signal from a lifeboat, you should activate the signal __.
- 79. A distress signal ________.
- How should the lifeboat sea painter be rigged?（）
- Prior to lowering the lifeboat，the most important item to check is the（）.
- What following is not among the functions of SOLAS ships?（） A: receive shore-to-ship distress alerting B: transmit ship-to-shore distress alerting C: receive message for public correspondence D: transmit and receive locating signal
内容
- 0
As far as I see, this book has its own _______. A: merit B: signal C: visible D: swift
- 1
21. The fog most commonly encountered at sea is called__________.
- 2
The signal sequence that directs a protein from the cytosol into the nucleus is called nuclear localization signal (NLS).
- 3
Fish ______ from prehistoric sea creature.
- 4
Which statement is true of a NAVTEX receiver? A: Reception is not available in Ocean Area I. B: Operates on 518 kHz. C: One must transmit a request signal to initialize the coastal station. D: Receives distress transmission directly from ships operating in the same Ocean Area.