旅行社缴纳保证金的形式为()。A.有价证券 B.房产 C.银行担保 D.现金

题型:单项选择题

问题:

旅行社缴纳保证金的形式为()。

A.有价证券

B.房产

C.银行担保

D.现金

考点:导游资格考试导游(旅游政策与法规、职业道德、时事政治)2003年福建省政策法规与导游服务试题
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(2分)在潜水艇中常用过氧化钠(Na2O2)来吸收人呼出的二氧化碳气体,并产生氧气,供给人的呼吸。其反应的化学方程式为:2Na2O2+2CO2==2Na2CO3+O2。现有过氧化钠78g与足量的二氧化碳反应,求生成氧气的质量。

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根据热力学第二定律,可知下列说法中正确的有 (   )

A.热量能够从高温物体传到低温物体,但不能从低温物体传到高温物体

B.热量能够从高温物体传到低温物体,也可能从低温物体传到高温物体

C.机械能可以全部转化为内能,但内能不可能全部转化为机械能

D.机械能可以全部转化为内能,热量也可能全部转化为机械能

题型:单项选择题

对于设置机械通风的民用建筑和工业建筑中,当室内的有害气体和粉尘有可能污染相邻房间时,室内压力设计应该为( )。

A.保持负压
B.保持正压
C.保持大气压
D.保持零压

题型:单项选择题

You probably won’t be shocked to find out that the inventor of tire rubber is Charles Goodyear, as he’s the only guy on the list to actually get his name attached to the end product. (46) It wasn’t easy coming up with a form of rubber tough enough to withstand the drag racing and car chases everyone envisioned the day the automobile was invented. In fact, if there was one man who should have given up his life dream, it was Goodyear. (47)The man spent time in and out of prison, lost every friend he had and starved his children in his tireless pursuit of a per form of rubber.

(48) After his first two years of tinkering and failing with primitive rubber in the 1830s, Goodyear and his family were camping out in an abandoned factory and fishing for sustenance. This is when he made a huge breakthrough: He’d use acid to smooth out and toughen rubber! The government bought 150 mailbags made of the stuff and the rest is...

Oh, wait. They were all defective. The process didn’t work and Goodyear was ruined. Again.

Finally in 1839, Goodyear wandered into a general store with another failure of a formula. The crowd watched and laughed at him. (49)In a rage, he began to shake his fist, flinging a piece of his rubber onto the hot stove top.

After inspecting the charred remains, he realized that he had just found a way to make durable, weatherproof rubber. (50) Despite what we’re sure were numerous failed "now let’s try setting this on fire to see if it improves it!" experiments, an empire was born.

(50) Despite what we’re sure were numerous failed "now let’s try setting this on fire to see if it improves it!" experiments, an empire was born.

题型:单项选择题

在Dreamweaver中,按住()键,同时鼠标单击图APDiv元素,可以同时选取多个图APDiv元素。

A、Shift+Q

B、Shift

C、Ctrl

D、Ctrl+Shift+Q

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