下面各组词语中,加粗字的注音全都正确的一组是[ ] A.思忖(cǔn) B.金钏(

题型:选择题

问题:

下面各组词语中,加粗字的注音全都正确的一组是
[ ]
A.思(cǔn)  
B.金(chuàn)
C.缩(juàn) 
D.死(lēī) 
(xiá)       
(yuán)    
物(shí)       
然(nǎn)   
(yān)      
(kài)   
惑(gǔ)        
顶(qióng) 
痛绝(wú)              
穿附会(zuó)          
天物(tiǎn)           
义债填(yīng)       
考点:字音
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根据浮选药剂作用的不同,一般将它们分为三大类,即()、()、()。

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下列离子方程式与所述事实相符且正确的是     [ ]

A.向稀氨水中逐滴加入稀硝酸银溶液配制银氨溶液 Ag++2NH3·H2O=[Ag (NH3)2]++2H2O

B.用双氧水和稀硫酸可以雕刻印刷电路板:Cu+H2O2+2H+=Cu2++2H2O

C.硫化钾晶体溶于水:S2- + 2H2O2OH- + H2S

D.澄清石灰水与过量苏打溶液混合:Ca2++2OH+2HCO3=CaCO3↓ +CO32-+2H2O  

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Malaysia Airlines deeply regrets that MH370 ended in the southern Indian Ocean. MH370 first d_小题1:___ in the early hours of March 8th, while flying from Kuala Lumpur to Beijing.

We should know how to s__小题2:__ ourselves when the crash happened. Australian professor Galea, summed up 6 golden rules after years of research. It might be able to help you escape in case of emergency.

S__小题3:__ 1985, Australian professor ED Galea has interviewed 2,000 survivors of 105 plane crashes, searching for the keys to survival.

First, if you are traveling in a f ___小题4:__ group, you should insist that the airline does not separate (分开)you throughout the aircraft. Why? It’s natural that if you’re involved in that kind of situation that you’re going to want to meet the family before you move out.

Second, how do you untie your seat belt in a plane? You press a button. If you can’t untie your seat belt, then, you can’t run away and your c__小题5:__ of survival will drop.

Third, sit within seven rows of an exit and count exactly how many rows you are from the nearest two exits. Count so that you can find an exit in the d___小题6:__.

Fourth, we would all be safer if airline seats faced backward. But the difficulty with this is that the most of the tourists don’t like t__小题7:__ with their back facing the direction of travel.

Fifth, “Smoke is h__小题8:__ to your health. If you take in enough of them, you will die,” explains Galea. You must learn how to use a smoke mask. Otherwise, you’ll waste time trying to put it on -- time that could be used for running a __小题9:__.

At last, listen to the preflight briefing(飞行前的注意事项) by the flight attendants and read the s__小题10:__ instructions. Always be prepared. Good luck to you.

题型:选择题

变配电所综合自动化设计应遵循哪些原则?()

A.使变配电所运行方便、维护简单,提高劳动生产率和营运效益,实现减员增效

B.减少变配电所占地面积,降低工程造价

C.减少变配电所设备的配置,避免设备重复设置,实现资源共享

D.提高变配电所安全生产水平,技术管理水平和供电质量

题型:选择题

如图,采用过冷循环的目的不是为了()。

A、提高液体过冷度

B、提高制冷系数

C、防止吸、排温度过高

D、防止滑油温度过高

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