复用段倒换功能测试对倒换时间的要求是倒换时间为≤50ms,通道环保护倒换时间要求≤5

题型:判断题

问题:

复用段倒换功能测试对倒换时间的要求是倒换时间为≤50ms,通道环保护倒换时间要求≤50ms。()

考点:光纤数字通信调试工考试中级光纤数字通信调试工中级光纤数字通信调试工题库
题型:判断题

化学知识和技能,能帮助我们解决很多生活中的实际问题,请利用学过的化学知识回答下列问题.

(1)往锁孔里加入一些从铅笔芯刮下的粉末,有利于锁的开启,这是因为: _________

(2)当你发现家里有煤气泄漏时,应先 ________ ,切忌不可产生明火,否则有发生 ____ 的危险;

(3)课外活动小组的同学在浇灌校园内的花草时,要将塑料水管接到水龙头上,可是塑料水管不易套上水龙头,此时可采取的办法是 ________

题型:判断题

乙二醇精制塔在压力一定的情况下,能判断乙二醇产品合格的工艺参数是()。

A、塔的液位

B、产品产出口温度和灵敏板温度

C、回流罐液位

D、塔顶冷凝器液位

题型:判断题

下列各项,不属于丹毒称谓的是().

A.抱头火丹

B.火丹脚

C.赤游丹

D.流火

E.缠腰火丹

题型:判断题

阅读理解

     Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.

     Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that

is not yet ripe or finished. For example, a greenhorn is someone who has no experience, who is new to

a situation. In the fifteenth century, a greenhorn referred to a young cow or ox whose horns (角) had not yet developed. A century or so later, a greenhorn was for a soldier who had not yet had any experience

in battle. By the eighteenth century, a greenhorn had the meaning it has today - a person who is new in a

job. 

     Someone who has the ability to grow plants well is said to have a green thumb. The expression

comes from the early nineteen hundreds. A person with a green thumb seems to have a magic touch that makes plants grow quickly and well. You might say that the woman next door has a green thumb if her

garden continues to grow long after your plants have died.

     The Green Revolution is the name given some years ago to the development of new kinds of rice

and other grains. The new plants produced much larger crops. The Green Revolution was the result of

hard work by agricultural scientists who had green thumbs.

     Green is also the color used to describe the powerful feeling - jealousy (嫉妒). The green-eyed monster (怪物) is not a frightening creature from outer space. It is an expression used about four hundred years ago by British writer William Shakespeare in his play “Othello”. It describes the unpleasant feeling a person has when someone has something that he wants to get. A young man may suffer from the green-eyed

monster if his girlfriend begins going out with someone else. Or, that green-eyed monster may affect your friend if you get a pay rise and he does not.

1.  Greenhorn now refers to _______.

A. a new solider

B. a person with little experience

C. a young horse       

D. a fruit that is not yet ripe

2. A person who has a green thumb is a person _______.

A. who is good at growing plants

B. whose thumbs are in green color

C. whose garden is greener than others’

D. who is younger than his neighbors

3. The author is actually talking about _______.

A. colours

B. language    

C. culture

D. agriculture  

4. Which of the following statements is NOT true according to the passage?

A. In about the 16th century, a greenhorn meant an experienced soldier.

B. The Green Revolution has connection with agricultural science.

C. We will call a person who is good at gardening a green thumb.

D. People use “a green-eyed monster” to describe a jealous person.

题型:判断题

下列哪项不符合病毒性心肌炎的主要体征

A.第一心音低钝

B.心律失常

C.舒张期奔马律

D.颈静脉怒张

E.心包摩擦音

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