下列说法正确的是( ) A．沃克环流在大西洋也有存在 B．“厄尔尼诺”现象发生后

某35kV电气装置工程项目，施工项目经理部为了保证施工项目按期完成，使资源配置尽量达到合理和最大限度地降低成本，就组织人员进行施工进度计划的编制，编制采用的方法是横道图施工进度计划。
施工过程中的部分施工工序和要点如下。
(1) 坚持先交接试验后通电运行、先接电启动后模拟动作的基本原则。
(2) 在做电气交接试验时，高压电气部分做绝缘强度和继电保护试验。
(3) 在做电气交接试验时，低压电气部分主要是做继电保护试验。
(4) 在负荷试运行时要根据工程师的要求决定是否要联合编制负荷试运行方案。
(5) 所有电气试运行时必须在空载状态下进行。
(6) 电气设备安装技术人员应配合土建工程进行预留和预埋工作

机电安装工程进度计划按工程项目可分为哪几类计划

Are you an optimist? Do you look at your glass and see it as half full? Do you believe that every cloud has a silver lining and that things generally turn out for the best? Do you believe that if something is meant to be, it will be? If you reply “yes” to all of these questions, then you are an optimist. You probably are enthusiastic, cheerful and outgoing. You may be successful at work and in love.

But you may be misguided because things don’t turn out for the best. You may believe that when one door closes another one opens (for example, you may fail to obtain a new job; another chance will come around soon). Wrong. When one door closes, another door slams (砰然关上) in your face. That’s bitter reality.

Now a book has been published which confirms what pessimists (悲观者) have suspected all along. It’s called The Positive Power of Defensive Pessimism. Its author argues that defensive pessimism can lead to positive results. Defensive pessimism is a strategy used to manage fear, anxiety and worry. Defensive pessimists prepare for the things by setting low outcomes for themselves. They carefully consider everything that may go wrong and plan for ways to handle these problems. And this gives them a sense of control. Lawrence Sanno, a psychology professor, says, “What’s interesting about defensive pessimists is that they tend to be very successful people, so their low opinion of the situation’s outcomes is not realistic. They use it to motivate themselves to perform better.”

So far, so good. This is not rocket science. Defensive pessimists prepare carefully and consider what might go wrong, whether at work, on date or even in a sports game. It makes sense to have a back-up plan. There are many sayings in English urging caution. For example, “Don’t put all your eggs in one basket.” And “Don’t count your chickens until they hatch.” To have a confident and optimistic approach to life’s problems is good. But listen to what Woody Alien, the American comedian says, “Confidence is what you have before you understand the problem.”

There are pros and cons to being an optimist and a pessimist. Don’t feel bad if you see the glass half empty. You are a realist. But lighten up and hook up with someone who sees the same glass half full.

小题1:What’s the passage mainly about?

A．A book that has recently been published.

B．How to become successful in life.

C．The dangers of being too optimistic.

D．The benefits of defensive pessimism.小题2:The underlined sentence “This is not rocket science” (Para. 4) means __________.

A．it’s not a dangerous thing to do

B．it is quite simple to understand

C．the cost is not so high

D．there is no real proof小题3:Which of the following English expressions would a defensive pessimist believe?

A．Don’t put all your eggs in one basket.

B．The glass is half full not half empty.

C．Whatever will be, will be.

D．Every cloud has a silver lining.小题4:The writer would probably describe himself as __________.

A．an optimist

B．a defeatist

C．a realist

D．a scientist

A、B、C、D四种元素在周期表中分别处于元素X的四周（如下右图），已知X元素最高价氧化物的化学式为X₂O₅，且五种元素中有一种元素的原子半径是它所处族中最小的．请回答下列问题：

（1）写出各元素的符号：A______，B______，C______．

	B
A	X	C
	D

（2）写出A、X、C最高价氧化物对应水化物的酸性由强到弱的顺序（最高价氧化物对应水化物用化学式表示）：______．

（3）写出A、B、X气态氢化物稳定性由强到弱的顺序（气态氢化物用化学式表示）：______．

进入中学后，初中生活把我们带进一个崭新的天地，在这个新天地里，我们站在一个_____的起点上，体验成为一名初中生的快乐。

旅行社责任保险的保险期限为( )年。

A．半
B．一
C．两
D．三