Liens may be created by the contract（）

1、Chronometer error may be found by（）.

Chronometer error may be found by（）.Aradio time signalBcomparison with a timepiece of known errorCapplying the prevailing chronometer rate to previous readingsDAll of the above

2、Traffic separation schemes may be（）by

Traffic separation schemes may be（）by the Organization for the purpose of these Rules.AadoptedBadaptedCadjustedDadmitted

3、The best title for the passage may be

The best title for the passage may be ______.A Garbage and the EarthB Fossil Fuel and GarbageC Land and GarbageD Garbage? Energy Source

4、Advection fog may be formed by cold ai

Advection fog may be formed by cold air passing over a（）.Acolder sea surfaceBwarmer sea surfaceCdry coastal plainsDhigh mountain or plateau

5、Static electricity may be built up by

Static electricity may be built up by the（）.Aflow of petroleum through pipesBspraying or splashing of petroleumCsettling of solids or water in petroleumDAll of the above

6、The injection may be delayed, （）the pu

The injection may be delayed, （）the pumps are in good order, if the fuel lines to the injection valves have not been cleared of air.AbecauseBthoughCsinceDuntil