一个长8cm、宽5cm的长方形按5:1放大,得到的图形面积是______.

题型:填空题

问题:

一个长8cm、宽5cm的长方形按5:1放大,得到的图形面积是______.

考点:图形的放缩
题型:填空题

“社会公约在公民之间确立了这样一种平等,以致他们大家都遵守同样的条件并且全都应该享有同样的权利”。这句话最有可能出自谁的著作  [ ]

A.狄德罗

B.伏尔泰

C.孟德斯鸠

D.卢梭

题型:填空题

( )特别适于焊接微型、精密、排列非常密集、对热敏感性强的工件,适于焊接厚度小于0.5mm的薄板、直径小于0.6mm的金属丝。

A.电子束焊
B.等离子弧焊
C.电渣焊
D.激光焊

题型:填空题

下列叙述正确的是

[ ]

A.如图1所示将一定量的铜片加入到100 mL稀硫酸和硫酸铁的混合溶液中,若铜片完全溶解时(不考虑盐的水解及溶液体积的变化),溶液中的Fe3+、Cu2+、H三种离子的物质的量浓度相等,且测得溶液的pH=1,则溶液中c(SO42-)为0.5mol/L

B.如图2所示的装置中发生Cu+2Fe3+===Cu2++2Fe2+的反应,X极是负极,Y极的材料名称可以是铜

C.Cu2O是一种半导体材料,基于绿色化学理念设计的制取.Cu2O的电解池示意图如图3所示,石墨电极上产生氢气,铜电极发生还原反应 

D. 如图3所示当有0.1mol电子转移时,有0.1molCu2O生成

题型:填空题

男性,40岁,发热3d伴腹痛、腹泻,大便每天20余次,量少,有粘冻及脓血。大便光镜检有红细胞(++),白细胞(++),粘液(++),诊断为急性细菌性痢疾。

为预防菌痢传播应以以下哪一措施为主()

A.合理治疗病人

B.管理粪便

C.及时发现与治疗带菌者

D.药物预防

E.以切断传播途径为主的综合措施

题型:填空题

It was the night of the full moon, a time which always drives Java’s young people mad with excitement.

Fireworks were lit long before the moon (1) . The big noise brought people out (2) the warm night to enjoy the interesting scene. Everywhere, there were the paper remains of (3) fireworks lying on the ground. Little boys (4) more and covered their ears as they waited (5) for the explosions.

The moon appeared above the horizon: huge, (6) ball high above the city, and the (7) filled with people, as Java began to enjoy one of the year’s greatest (8) ."the Night of the Full Moon", a festival that is especially popular (9) young people.

More and more young Javanese (10) together and walked slowly through the (11) . Joking and chatting, they moved towards the mountain (12) the city. They continued to climb (13) they reached the old temple at the (14) of the mountain.

After they were (15) the temple, they drank their water and ate their mooncakes—delicious home-made ones, (16) of dried fruit and nuts. Outside, on the mountain, young people (17) cross-legged in circles, chatting and telling each other jokes. And (18) , in their hundreds, more young people continued to make their way up the mountain to (19) the brightly shining moon.By midnight, the fireworks had stopped shooting up from the (20) city in the valley below them. But during the night, the sound continued to be heard from the distance.

19()

A.follow 

B.show 

C.notice 

D.admire

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