Just before charging the system with clean refrigerant, you should:
A) Install filter driers. B) Recover the refrigerant.
C) Evacuate the system. D) Flush the system.
C
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The second-order AR filter has feedback coefficients a1=0.9 and a2=0.5 (b0 = 1). When xi = sin(2?i/8), the value of y2 = ________(x.xx).
Analysis: x0=sin(0)=0, x1=sin(?/4)=0.707, x2=sin(?/2)=1. yi = 0.9yi-1 +0.5yi-2 + xi. With zero initial conditions: y0=x0 =1 y1=0.9y0+x1=0.9(1) + 0.707 = 1.607 y2=0.9y1+0.5y0+x2 = 0.9(1.607) + 0.5(1)+ 1 = 2.9463 = 2.95
Answer the following statements true (T) or false (F)
1. Exports are financially recorded as negative entries in the balance of payments since the products leave the U.S. 2. An increase in U.S. interest rates would cause a decrease in the demand for U.S. dollars. 3. An expansionary monetary policy by the Federal Open Market Committee would cause interest rates to decline and the exchange rate to depreciate, ceteris paribus. 4. Comparative advantage is a monetary concept and is affected by changes in exchange rates or inflation. 5. The mercantilist philosophy argues that nations can become rich and powerful by exporting more than they import.
Medical records are legal documents that must be kept by veterinarians for a minimum of 6 years (may vary by state)
A. True B. False
____ are used in all phases of manufacturing and constructing-from concept development to product completion to marketing and sales to after-market repair and maintenance.
A. Pictorial sketches B. Artist sketches C. Technical sketches D. Impression sketches