Where does modal dispersion predominantly occur?
A. Multimode fiber
B. Single-mode fiber
C. Diode lasers
D. LEDs
A
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Before the International Building Code® was published in 2000, how many model building codes were in use?
a. Two b. Three c. Four d. None
Los aparatos de iluminación tipo C de la Figura 1 tienen la letra R junto a las cajas de salida. De acuerdo con los símbolos eléctricos del ANSI (American National Standards Institute: Instituto Nacional Estadounidense de Estándares), R significa que los _____.
a. aparatos de iluminación se elevan hasta la superficie del techo terminado b. aparatos de iluminación están empotrados c. los aparatos de iluminación son resistentes al polvo d. lentes son de color rojo
Senator Joseph McCarthy first rose to national prominence by
A. revealing that communist spies were passing atomic secrets to the Soviet Union. B. charging that there was extensive communist influence in Hollywood and the media. C. asserting that General George Marshall was part of a vast communist conspiracy within the U.S. Army. D. mobilizing Republicans to demand a stronger anticommunist foreign policy in East Asia. E. charging that dozens of known communists were working within the U.S. State Department.
Once a bed of compound and tape has been applied in interior corners, the tape is smoothed using a _____
a. flat finisher b. corner applicator c. BAZOOKA® d. corner roller