近年来我市开始推广使用乙醇汽油.乙醇汽油是由乙醇和普通汽油按一定比例混配形成的能

题型:问答题

问题:

近年来我市开始推广使用乙醇汽油.乙醇汽油是由乙醇和普通汽油按一定比例混配形成的能源.乙醇汽油能有效改善油品的性能和质量.它不影响汽车的行驶性能,还减少有害气体的排放量.乙醇汽油的推广及使用,可以缓解因石油资源短缺而造成的经济压力,乙醇汽油作为一种新型清洁燃料,是目前世界上可再生能源的发展重点.

限载6人排水量1.4t
油箱容积40L快艇自身质量1000kg
下牢溪风景秀丽,碧波荡漾,乘坐快艇是许多游客积极参与体验的水上娱乐项目.为了保护环境,下牢溪风景区管委会改用乙醇汽油作为快艇的燃料.下表为某种快艇的部分技术参数:

(1)请写出使用乙醇汽油的两点好处?

①______;②______.

(2)小明在一次游玩中,快艇匀速行驶46km,他从油量表中发现此次行程耗油8L,已知油密度约为0.7×103 kg/m3,那么这次消耗的油的质量是多少了?

考点:密度公式的应用能源消耗对环境的影响
题型:问答题

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的 词或使用括号中词语的正确形式填空,并将答案填写在答题卡标号为31—45的相应位置上。

小题1:They reached an agreement that would be __________ ( benefit ) to both sides.

小题2:I have a very busy life with no time __________ ( sit ) around feeling sorry for myself.

小题3:_________ ( badly wound ), the whale soon died.

小题4:Please look after my house during my ___________ ( absent ) .

小题5:I saw James_________ ( hold ) up in the water by Old Tom.

小题6:Anyone will be punished if he __________ ( obey ) the laws.

小题7:I could see he was terrified of __________ ( abandon ) by us.

小题8:I am happy __________ ( find ) many things I can do.

小题9:__________ pausing, we jumped into the boat with the other whalers and headed out into the bay.

小题10:Both he and I __________ ( satisfy ) with the result.

小题11:The meeting is held __________ ( annual ).

小题12:What a sweet victory __________ ( envy ) by those women!

小题13:__________ ( reflect ) that this was her last chance, she was very careful.

小题14:It will take several days for your computer _______ ( repair ) .

小题15:__________ ( look ) after my pets properly takes a lot of time but I find it worthwhile.

题型:问答题

在汽车加油站应该张贴的警示图标为(  )

A.

B.

C.

D.

题型:问答题

治疗特发性血小板减少性紫癜,应首选()。

A.肾上腺皮质激素

B.输血及血小板悬液

C.静脉滴注大剂量丙种球蛋白

D.环磷酰胺

E.硫唑嘌呤

题型:问答题

可以引起设备经济性贬值的有()。

A.产品滞销

B.设备价格上升

C.竞争加剧

D.境外途中保险费

E.设备磨损

题型:问答题

Confiscated properties汉译为:______。

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