The cellular structure of wood consists mainly of

A) hollow, small, approximately spherical cells.
B) solid, small, approximately spherical cells.
C) hollow, long tubular cells.
D) hollow, small, approximately ellipsoidal cells.
E) either C or D.


C) hollow, long tubular cells.

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Ground-fault circuit interpreter (GFCI) devices are often referred to as ____.

A. faulters B. CIs C. GFIs D. grounders

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In the AWS numbering system for carbon steel filler metal for GMAW, the last number indicates ____.

A. a cut length "roo" type electrode B. solid wire C. the minimum tensile strength of the deposited metal D. the filler metal composition and the weld's mechanical properties

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Convert the information given in the accompanying table from SI units to U.S. Customary units. Refer to conversion tables on the front and back end sheets of this book. Show all steps of your solutions.

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The vertical members used to support forms for a cast-in-place concrete stairway are called _____

a. struts b. props c. posts d. shores

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