Зачем в верхних и нижних частях корпусов проекционных аппаратов, больших электрических фонарей, киноаппаратов делают отверстия?

Для их охлаждения. Если в нижней и верхней частях корпуса есть отверстия, то в нем возникает циркуляция воздуха. Нагретый воздух выходит через верхнее отверстие, а его место занимает холодный воздух, поступающий из нижнего отверстия.

 

dear alex,

 

how are you? i am in the capital of england — in london. my parents and i always dreamt about seeing this nice city.

 

there are a lot of beautiful old buildings. we have alredy seen westminster abbey, big ben (now it called elizabeth’s tower), the houses of parliament, buckingham palace, st. paul’s cathedral, london bridge, the tower of london and the waxworks madame tussaunds museum. there are the models of famous people from pop stars to prime ministers made from wax in this museum. they look like real. it’s so interesting.

 

my parents and i are walking on trafalgar square now. there is nelson’s column in its centre which is guarded by four lion statues at its base. by the way, i sent you this postcard with a picture of trafalgar square.

 

the weather is not fine today, it’s foggy and rainy. but it doesn’t spoil our walking.

 

we took much photos. next week we will be at home and i’ll show you them.

 

don’t miss the chance to visit england and london.

 

best wishes,

maria

it   was   july   16,   2008   and   i   was   at   city   hall   to   do   something   thatwould change my life forever. i went to room 302 and got my workingcard.   i   thought   i   was   independent   and   ready   to   get   a   job.

first i filled in applications. i put in over 100 applications at restau-rants, clothing stores, and hotels. i kept looking for a job, and i decidedto   go   to   the   mall.   i   was   interested   in   getting   a   place   in   one   restaurantbecause my good school friend worked there, and he told me they neededpeople.   i   thought   it   might   turn   out   to   be   successful.

one   day,   when   i   came   home   and   turned   on   the   answering   machine,there was a message on it. it was a job! a lady from a supermarket calledme   for   an   interview   on   tuesday.   i   was   very   excited.   this   was   my   first  interview.   on   sunday   i   got   up   early,   my   mom   and   i   went   shopping   fora dress. i put on this dress on tuesday. the lady asked me a lot of questi-ons,   but   i   thought   over   the   answers   the   day   before.

i   didn’t   get   the   job,   but   i   found   out   that   you   can’t   get   a   job   easily.it’s   very   hard   work.