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111年 - 1102第一次期中考英二英文Review 1#110066
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9.In terms of agriculture, acid rain not only reduces soil _______(fertile) but also prevents the growth of plants and crops
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5.Even though the police had tracked down the IP address, they were not able to reveal the true i _____y of the computer user.
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6.Surrounded by the sea, the island provides an a______ e of fish and other seafood for people living on it
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7.Kelly______ (treasure) the pearl necklace very much since it once belonged to her late mother
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8.We had a great time at the lakeside resort and were treated like ______(royal) by the staff there.
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10. Tom kicked the ball with_______ (precise) and power, passing it to his teammate far up the field accurately.
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37. 過去幾年來，時髦的咖啡館在臺北接二連三迅速興起；每一家都有自己的獨特風格，值得拜訪。 Over the past few years, trendy cafes have been___________ ___________ one after another in Taipei; with its unique style, each is worth visiting.
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38. 我們在網路上無意間發現這個露營地。它是春天賞櫻的最佳地點之一。 We found the campsite ___________ ___________ on the Internet. It is one of the best spots to view cherry blossoms in spring.
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a.(20%) Estimate the values of J and B.
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b. (20%) Suppose that we employ a unity feedback to control the motor anguiar velocity and set the desired angular velocity to 100 rad/s, as shown in Fig. 2. Assume the load torque is constant TL=0.1. Determine the phase margin of this feedback system. Also estimate the regulation error e(t) in steady state. y do(t)
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PROBLEM 2(15%) Consider a system with the following unit step response y. Determine the poles and zeros of the system.
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