The Iroquois Confederacy was able to menace its Native American and European neighbors because of
A. its military alliances, sustained by political and organizational skills.
B. the Iroquois warriors' skill with the Europeans' muskets.
C. the scattered nature of the Iroquois settlements, which made it difficult for their enemies to defeat them.
D. the alliance with the Aztecs and Incas.
E. its use of new weapons.
Answer: A
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Matched processor for complementary signals. The following worksheet specifies a 10-sample data signal s1 in B4:B13. A random transmitted bit Dt is computed in B1. The transmitted signal sTi (in C4:C13) = si if Dt=1 and =-si if Dt=0. The Gaussian noise sequence Ni SD ?N is specified in F1. The detected signal Xi is computed in E4:E13. The matched processor component siXi is computed in F4:F13, and the matched processor output V is computed in F15. The detected bit Dr is computed in D1.
a. What is the formula that computes Dt
in B1?
b. What is the formula that computes the transmitted signal sT2 in C6?
c. What is the formula that computes the noise component N2 in D6?
d. What is the formula that computes the detected signal X2 in E6?
e. What is the formula that computes the processor component s2X2 in F6?
f. What is the formula that computes the processor output V in F15?
g. What is the formula that computes Dr in D1?
?Technician A says that cast pistons run cooler than forged pistons. Technician B says that cast pistons are stronger than forged pistons. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Which of the following is a rarely used metering device that can be used in applications where the load is constant and an operator is present to make manual adjustments?
A) Fixed metering devices B) Hand-operated expansion valves C) Modulating metering devices D) Fixed valves
The excess gain curve for a retroreflective light sensing device is __________.
A. linear B. non-linear