题目内容

Pressure is the ratio of ------ to ---------- .

A. Length, area
B. Force, area
C. Area, temperature
D. Temperature, force

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The specific gravity of a fluid, designated as SG, is defined as the ratio of the density of the fluid to the density of water at some specified temperature. And SG has a unit of

A. Slugs/𝑓𝑡3
B. Kg/𝑚3.
C. Slugs/in3
D. Has no unit

The specific weight of a fluid, designated by the Greek symbol γ (gamma), is defined as its weight per unit volume. Thus, specific weight is related to density through the equation

A. γ=ρ g
B. γ=ρ/g
C. γ=ρ/g2
D. γ=ρ/SG

The density of a fluid, designated by the Greek symbol (𝜌 rho), is defined as its mass per unit volume. In the BG system, (𝜌 rho) has units

A. Slugs/𝑓𝑡3
B. Kg/𝑚3.
C. Slugs/in3
D. Slugs.𝑓𝑡3

Which unit below is not in the English Engineering (EE) System of units?

A. The unit of mass is the pound mass (lbm),
B. The unit of force is the pound lb1
C. The unit of length is the meter (m),
D. the unit of time is the second (s)

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