After leveling a transit-level over the point of an angle, called its ____, loosen the horizontal clamp screw.
a.measure
c.height
b.vertex
d.base
ANS: B
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¿Cuántas secciones de tres pies (0,91 m) de aislamiento para tuberías se necesitan para aislar 420 pies (128,02 m) de tubería?
a. 100 b. 160 c. 140 d. 420
Los cables de telecomunicaciones en un subsistema ER o TR se deben mantener al menos______ de la iluminación fluorescente.
a. 5" (12,70 cm) b. 8" (20,32 cm) c. 10" (25,40 cm) d. 12" (30,48 cm)
How many millimeters are there in one meter?
Figure
Given a signal 
impulse sample it at the rate specified by multiplying it by a periodic impulse of the form 
Then filter the impulse-sampled signal with an ideal lowpass filter whose gain is 
in its passband and whose corner frequency is the Nyquist frequency. Graph the signal x (t) and the response of the lowpass filter xi (t) over two fundamental periods of xi(t).
