当精密压力表的示值为零时,说明此时的绝对压力与()相等。
A、余压
B、空
C、大气压力
D、真空
参考答案:C
I am an adult. I’m not a kid. I’m a grown-up. I need some money. I have no food. I am hungry. I am not thirsty, because water is everywhere. But water has no taste. I want to drink a soda. I want to drink milk. I want to drink coffee. I want to work. Nobody will hire(雇佣 )me. Nobody is hiring anybody. Companies are firing(解雇) people. Everyone is looking for a job. I cannot pay my rent(付房租). I will have to live in my car. I don’t want to live in my car. My car has no bed. Everyone should live in a house or a flat. Many people don’t have a car. They live on the street. A street has no bed. Nobody should live on the street. I don’t know what to do. I don’t know where to go. Maybe I will go to church(教堂). Maybe I will find help there.
小题1:I need some money because I _______.
A.need water to drink
B.need food to eat
C.don’t need water to drink
D.don’t need food to eat小题2:I don’t want to buy _______to drink.
A.soda
B.milk
C.water
D.coffee小题3:I want to live __________.
A.in a house
B.in my car
C.on the street
D.in the church小题4:I am looking for ________
A.water
B.a job
C.a house
D.the church小题5:Which is wrong?
A.Companies are firing people.
B.I can pay my rent .
C.I will go to church for help.
D.Nobody should live on the street.
对于发热量为4.2~14MW的燃煤锅炉,其侧面和后面的通道净距不宜小于( )m。
A.1.0 B.1.2 C.1.4 D.1.5