____ assist the beginner in keeping all the letters shaped correctly and spaced properly.

A. Angle dimension lines
B. Angle reference marks
C. Angle construction lines
D. Angle guide lines


Answer: D

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Many northern states passed personal liberty laws in response to the Compromise of 1850's provision regarding

A. legally authorizing slavery in the District of Columbia. B. expansion of slavery in the territories. C. restrictions on free blacks. D. the interstate slave trade. E. the facilitation of the return of runaway slaves to slaveowners.

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The term ____________________ refers to a PV cell configuration in a module where glass is not only used as a supporting structure but also as a window for the illumination of the cells.

Fill in the blank(s) with the appropriate word(s).

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Which plate(s) require J-groove joint preparation based on the welding symbol shown in Figure 2?

a. Plate A
b. Plate B
c. Both plate A and B

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?The vapor pressure of a liquid is independent of temperature.

Answer the following statement true (T) or false (F)

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