The Instrument That Emits a High-Frequency Sound Beam to Measure

question 57

Multiple Choice

The instrument that emits a high-frequency sound beam to measure the depth of the ocean developed in the 1950s is the:

• A)GLORIA.
• B)precision-depth recorder (PDR).
• C)Seabeam.
• D)SeaMARC.
• E)SeaWif.

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Definitions:

Margin

Describes securities purchased with money borrowed from a broker. Current maximum allowed margin on stock purchases is 50%.

Sell the Stock

An action where an investor disposes of their ownership in a corporation through the sale of its shares.

Maintenance Margin

The minimum equity amount that must be maintained in a margin account after a purchase has been made, to cover the risk of the investment.

Margin Call

A demand by a broker that an investor deposit further cash or securities to cover possible losses.