A sight glass is installed in the liquid line to indicate th

Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid line If excess moisture is present in the system, the indicator will

A.activate the driers

B.change color

C.secure the compressor

D.add a predetermined amount of liquid drier

Areas enclosed by a long and short dashed magenta line indicate ______.

A.cable areas

B.dumping grounds

C.fish trap areas

D.precautionary areas

On the balance sheet, assets and liabilities are classified as either (61) or long-term to indicate their relative liquidity. Liquidity is a (62) of how quickly an item may be converted to cash. Therefore, (63) is the most liquid asset. Accounts receivable are a (64) liquid asset because the business expects to collect the amount in cash in the near future. (65) are less liquid than accounts receivable, and furniture and buildings are even less so.

(46)

A．short-term

B．current

C．circulating

D．futures

At sea you sight two red lights. This would indicate ______.

A.A vessel engaged in laying cable

B.A vessel not under command

C.A vessel launching and recovering aircraft

D.All of the above

In the refrigeration system, a shortage of refrigerant is indicated by

A.the compressor short cycling on high pressure cut out switch

B.high suction pressure

C.high head pressure

D.bubbles in the sight glass

The height of eye correction is smaller than geometrical dip because of ______.

A.the angle between the horizontal and the line of sight to the visible horizon

B.index error

C.parallax

D.terrestrial refraction

此题为判断题(对，错)。