智慧职教: Ch 75 and Ch 76 are used as_ for distress channel 16.
举一反三
- 152. The "scan" function of VHF receiver is used to . A: monitor Ch 16 continuously and switching to either Ch 70 0r Ch 13 every 5 seconds B: scan Ch 16 for distress calls C: scan Ch 70 for distress alerts D: sequentially scan all or selected channels
- 150. What channel would you use to place a call to a shore telephone? A: Ch 16. B: Ch 70. C: Ch28 D: Ch 06.
- VHF Channel 70 can be used for ( ). A: distress and safety purposes B: public correspondence purposes C: ship to ship distress alert D: A, B and C are all correct
- ________被指定为VHF无线电话国际遇险与安全通信频道，俗称公共频道。 A: CH 16 B: CH 06 C: CH 10 D: CH 72
- 在紫外可见光区有吸收的化合物（） A: CH—CH—CH B: CH—CHOH C: CH=CH—CH—CH=CH D: CH—CH=CH=CH—CH