Operation Torch was 1) an Allied operation to clear Axis forces out of N. Africa 2) an axis operation to clear the British out of Malta 3) was designed by the Germans to control the Mediterranean 4) was the 1942 German offensive into the Caucasus in the USSR The Afrikakorps was defeated in Africa primarily because of 1) the desert climate 2) sandstorms 3) supply problems 4) the superior fighting skills of the Anglo-American forces The main objective of Hitler's new "Blue" offensive in May 1942 1) was the taking of Moscow 2) emphasized mopping-up operations around Leningrad 3) directed the bulk of German operations to the south through the Caucasus toward the Baku oil fields 4) was to bypass Moscow in the north and drive to the Ural Mountains into Siberia
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On June $24,1948,$ the former Soviet Union blocked all land and water routes through East Germany to Berlin. A gigantic airlift was organized using American and British planes to bring food, clothing, and other supplies to the more than 2 million people in West Berlin. The cargo $20,000$ cubic feet for a British plane. To break the Soviet blockade, the Western Allies had to maximize cargo capacity, but were subject to the following restrictions: $\cdot$ No more than 44 planes could be used. $\cdot$The larger American planes required 16 personnel per flight, double that of the requirement for the British planes. The total number of personnel available could not exceed 512 . $\cdot$The cost of an American flight was $\$ 9000$ and the cost of a British flight was $\$ 5000 .$ Total weekly costs could not exceed $\$ 300,000$. Find the number of American planes and the number of British planes that were used to maximize cargo capacity.
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The Cookenwythe Gas Company pumps propane gas to the nearby Noxious Chemicals, Inc., polypropylene production plant. The gas is metered at the Noxious plant at $400 \mathrm{m}^{3} / \mathrm{h}$ at $4.7 \mathrm{atm}$ gauge and $30^{\circ} \mathrm{C}$. The pressure at the Cookenwythe plant is 8.5 atm gauge, and the temperature is also $30^{\circ} \mathrm{C} .$ Noxious pays Cookenwythe at the rate of $0.60 / \mathrm{kg} \mathrm{C}_{3} \mathrm{H}_{8}$ One dark night Sebastian Goniff, a Noxious engineer who is really a spy for the Rancid Plastics Corporation - Noxious's principal competitor and a bunch of really rotten guys - puts into effect his plan to divert propane from the Cookenwythe-Noxious line into an underground pipe that leads to a secret Rancid tank-truck loading station in the middle of a nearby abandoned garbage dump. To cover the operation, Goniff obtains a broken pressure gauge that is stuck at 4.7 atm and substitutes it for the gauge at the Noxious plant. He adjusts the gas pressure regulator so that the real gauge pressure is 1.8 atm, instructs his associate in the ficld via mobile phone to open the Rancid line gradually, and tells him to hold it when the flowmeter at Noxious reads $400\mathrm{m}^{3} / \mathrm{h}$. To the unsuspecting Noxious meter reader, the flow rate and pressure would therefore appear to be normal. The plan goes according to schedule until the associate smells gas, suspects a leak near the valve, and lights a match to see if he can pinpoint the location. (a) What should the flowmeter read at the Cookenwythe end of the pipcline? (b) How much does Noxious pay Cookenwythe each month? (c) What flow rate of propane ( $\mathbf{k g} / \mathrm{h}$ ) should the Rancid trucks be prepared to handle? (d) What happened?
Directions: Choose and write the letter of the correct answer in your answer sheet. 1. The presence or absence of oxygen in the materials may result in the A. burning of the materials B. melting of the materials C. change in the materials D. materials remain the same 2. Iron, nails, cans and other metals with iron when exposed to moisture may develop A. dust B. rust C. heat D. fuel 3. The inner part of the potatoes and apples change in color because of A. fuel in it B. chemicals in it C. exposure to heat D. exposure to oxygen 4. The process of burning materials with the aid of oxygen is A. conduction B. combustion C. oxidation D. reduction 5. The Bureau of Fisheries investigated that fish kill incident was due to A. lack of oxygen supply B. hot summer temperature C. use of illegal fishing methods D. lack of carbon dioxide supply 6. The factors that influence the formation of rust on iron are A. increased level of oxygen B. moisture and oxygen C. dropping of oxygen D. oxygen level 7. The absence of oxygen in lighting a candle will cause the candle's flame to A. burn B. flare C. ignite D. extinguish 8. The reaction of iron with moisture and oxygen present in the air is called A. rusting
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