The material used extensively as elect

1、The preventer guy，as used on a convent

The preventer guy，as used on a conventional yard and stay rig，（）.Ais rigged at an angle of 70°to 90°from the guy it assistsBtakes t...

2、As used in the last sentence, the phra

As used in the last sentence, the phrase "in short" means ______.A in the long runB in detailC in factD in a word

3、Which of the materials listed is used

Which of the materials listed is used as the dynamic seal material on mechanical seals installed on most centrifugal pumps used in water service?（）ACopperBCopper and carbonCCarbonDBronze

4、Generally，（）are used as the track char

Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．AMercator charts／Loran cha...

5、The term "oil", as used in the Polluti

The term "oil", as used in the Pollution Prevention Regulations, means （）.Afuel oil onlyBcrude oil onlyCliquefied petroleum gasDpetroleum oil of any kind

6、The （）pump is usually used as the lubr

The （）pump is usually used as the lubricating oil pump.AturbineBscrewCvaneejectorDcentrifugal