Gases are not like solids ___ they have the finite volume.

Liquids are like solids _____ they have a definite volume.

中国大学MOOC: ____________ is science of the properties and relations of lines, angles, surfaces and solids.

The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of （）.

A simple rule to remember is ______ liquids are to the right and solids are to the left. A: which B: that C: what

Why we shouldn't release wastewater into the environment? A: It contains suspended solids and chemicals that affect the environment. B: because it is dirty.

creativity(<br/>) A: sustained thought or self-forgetful concentration, especially for the purposes of religious devotion or relaxation. B: a food made by pressing together a mass of soft, thick soured milk solids. C: the ability to make or invent something original or imaginative. D: containing a lot of oil, or covered with oil; greasy.

cheese(<br/>) A: containing a lot of oil, or covered with oil; greasy. B: sustained thought or self-forgetful concentration, especially for the purposes of religious devotion or relaxation. C: the ability to make or invent something original or imaginative. D: a food made by pressing together a mass of soft, thick soured milk solids.

If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the A.oil has a tendency to emulsify in the bowl B.purifier will act as a clarifier at the discharge ring C.oil will be lost through the water discharge ports D.oil solids will be deposited only at the intermediate top disk

Which of the following statements is false: ( ) A: Suspended solids are unstable and can be easily removed from the water. B: The colloidal particles are usually charged by adsorbing ions. C: The sizes of dissolved matters are less than 1 nm. D: The pollution of natural water only comes from the natural environment.