高中 解答

如圖(一)所示之螺旋起重機,螺桿之導程分別為 L = 10 mm , L = 8 mm , 同為右旋螺紋,施力桿迴轉半徑 R 為 20 cm,W 為套筒 B 內之滑塊荷重。 1 2 摩擦損失為 40%,當以 20 N 之力 F 能旋起套筒上之物體 W 時,則 W 約為 多少?

下列何種螺紋其螺紋角為 45°?

According to the passage, what is the term given to the shortcuts through space and time that might be possibly used for time travel?

Which of the following words could best be used to replace “tantalizing”?

What do the zoo keepers do to protect the baby panda from dying?

From the passage, we can assume that .

Which of the following word has the opposite meaning of “endangered” in the first paragraph?

Store clerk: Hi, may I help you? Customer: Yes, I’d like to rent these movies. Store clerk: Ok. Let’s see...your total tonight comes to seven dollars and fifty cents. Customer: Store clerk: They have to be returned before Thursday by 10 o’clock. There’s an overdue charge equal to the rental fee of the movies. Be sure to return them on time.

Mary: Hey, Jake. Are you ready for your trip? Jake: Well, not really. I still have to buy some clothes. Mary: Jake: It’s really hot in summer, so I am going to buy some shorts, sandals, and t-shirts.

Roy: Our TV is broken, Daddy. Daddy: Mmm... , Roy. We can read a book instead. Roy: Good idea, Daddy. How about the telephone book? So we can pick out a good repairman to fix our TV!

Jim: How was the party last night? Lucy: Awesome. But He said he had to work overtime. Jim: That’s too bad. Did you still have a good time? Lucy: Yes. It’s Ok. That’s just him. He’s a workaholic.

Alan: Have you ever heard the saying, “Clothes make the man”? It might be truer than we imagine. Carroll: When police officers or firefighters put on their uniform, it will affect their mental state. It probably gives them a sense of responsibility and authority. Alan: Absolutely. Carroll: Yeah, I think everyone recognizes that part about the power of clothes.

Tim: You’ve been pretty stressful recently. There’s a jazz concert tonight. How about going together to relax? Cindy: Sounds like fun. Thanks for being such a nice friend and caring about me so much. Tim: Both of us are under a lot of pressure. Cindy: That’s why we need friends. Tim: You said it! See you tonight.

Student: Hi, where’s Mr. Wu? You’re not our new English teacher, are you, sir? Teacher: No, I am just a substitute teacher for a day while Mr. Wu is away. Student: Away? Teacher: No, he just felt a little fatigued and needed some rest. He might go back to school tomorrow.

Woman: Man: Frankly, I never worked before. I’ve been unemployed since I graduated from the university. Woman: I see. The job market is very bad indeed. Man: I sincerely hope I’ll have the opportunity to work for your company.

Lorna: Boy! I’m cramming formulas and figures for our tomorrow’s test. What about you, Charlie? Charlie: Well, , Lorna. Lorna: You’ve got to think positively, Charlie. Think positively! Charlie: I can’t. The math questions exhausted me completely, but I still didn’t get them.

Before she saved sufficient money to buy a house of her own, she lived in her sister’s provisionally. But she planned to move out in one year.

Seeing his wife talking on the phone secretly, Jimmy became suspicious about what his wife was up to.

The iPhone has become an indispensable part of Tom’s daily life, and he never goes anywhere without it.

Complaints about the government’s failure to boost the depressed economy are increasing with more and more people losing their jobs.

The poorly-operated company finally announced bankruptcy after facing a series of financial difficulties that had appeared one after another.

Lack of sleep and prolonged exposure to extreme cold can lower the body’s resistance to bacteria, thus opening the way for a(n) .

Thanks to the advancement in biotechnology, scientists successfully cloned the sheep Dolly, which looked to a real one so that you could hardly believe that it was actually a cloned sheep.

A Pakistani TV show in which the host gives abandoned babies is causing among viewers for turning children into prizes, but the show’s producer says that it is a good deed to make childless parents happy.