If an alien stowaway is discovered abo

1、If there is an 

If there is an existing 802.11g WLAN at a site， which service can be provided&#8...

2、If an air compressor is used to supply

If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.Acontrol air systemBforced draft air systemCsupply air systemDships service air system

3、An air mass is termed warm if（）.

An air mass is termed warm if（）.Ait is above 70°FBthe ground over which it moves is cooler than the airCit originated in a high pressure areaDit originated in a low pressure area

4、If the electronic chart is part of an

If the electronic chart is part of an ECDIS,it must display the minimum data required by IMO/IHO,to include all of the following EXCEPT（）.AhydrographyBaids to navigationCtidal currentsDregulatory boundarie

5、If an emergency pump control is used a

If an emergency pump control is used as the emergency shutdown on a tanker，it must（）.Astop the flow of oil at the main deck manifoldBprevent the oil from leaving the shore facilityCprevent the oil from siphoning through the pumpDNone of the above

6、Daydreaming，science has discovered，is

Daydreaming，science has discovered，is an ______relaxation technique.A effectiveB affectiveC efficientD affectionate