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【简答题】
阅读理解。 You may have this question:where are we getting all the materials for our products? Two words-natural resources  (资源). Natural resources are items we find in the environment. There are two types of natural resources:renewable   (可再生的) and nonrenewable resources. Renewable resources are those items that we can get back if weuse them right. For example, when we cut down trees for paper,we can replant new ones. Of course, if we cut down too many trees, destroy the soil and do not replant enough new trees, then we will lose this important natural resource. Non-renewable resources must be mined (开采) from the earth. If we start using non-renewable resources wrongly, then we're going to run out ofthem. Remember, God gives us natural resources to use, not to abuse  (滥用) 1. Where can we fmd naturalresources? A. In the lab. B. At home. C. In the products. D. In the environment. 2. How many types ofnatural resources are there? A. Two. B. Three. C. Four D. Five. 3. ______ are that we can get back ifwe use them right. A. All the materials B. Renewable resources C.Non-renewable resources D. Renewable resourcesand non-renewable resources 4. Which of the following is TRUE? A. Paper is renewable, so we can waste it. B. We can cut aown too many trees and can't replant them, because they're renewable resources. C. We need to reduce(减少) our use of natural resources. D. God gives us natural resources to abuse. 5.What does the passage mainly talk about? A. Our products. B. Natural resources. C. Using non-renewable resources. D. Planting trees.
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【简答题】Given the following parameters, please calculate the ISA deviation at the aerodrome.
【单选题】Please calculate the visual angle, when H=100cm and D=100m .
A.
34.38´
B.
3438´
C.
3.438´
D.
343.8´
【单选题】Please calculate the radius used to obtain a time constant τ c of 1s.
A.
0.15mm
B.
0.20mm
C.
0.35mm
D.
0.45mm
【简答题】用于连接双绞线的网卡连接件是()。
【单选题】在局域网组网时,使用的基本硬件是RJ-45连接头,以太网卡,集线器和非屏蔽双绞线,那么这种组网方法属于( )。
A.
同轴电缆组网方法
B.
双绞线组网方法
C.
快速以太网组网方法
D.
千兆以太网组网方法
【单选题】刺血拔罐适用于
A.
咽喉肿痛
B.
风湿痹痛
C.
咳嗽
D.
神经性皮炎
E.
过敏性紫癜
【简答题】Seagull can achieve a profit after tax of 20% on capital employed. At present its capital structure is as followed 200 000 ordinary shares of $1 each 200 000 Retained earnings ...
【多选题】拔罐适用于( )。
A.
高热抽搐
B.
外感头痛
C.
皮肤过敏
D.
痈肿疮毒
【单选题】Please calculate the resistorances Rab and Rcd in the following network. (All resistors unit: Ω)
A.
Rab=140Ω Rcd=8.89Ω
B.
Rab=145Ω Rcd=8.89Ω
C.
Rab=150Ω Rcd=11.89Ω
D.
Rab=140Ω Rcd=8.08Ω
E.
Rab=145Ω Rcd=7.89Ω
【单选题】用于连接双绞线的网卡连接件是()
A.
BNC
B.
RJ-11
C.
RJ-45
D.
AUI
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