绝对压力等于大气压力与相对压力(表压)之和。

题型:判断题

问题:

绝对压力等于大气压力与相对压力(表压)之和。

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题型:判断题

One day a dentist was starting his morning work. Suddenly a man ran in. His face was red and he could only say “Quick! Quick!”, The dentist thought he must be very ill. His assistant(助手) helped to make the poor man sit in a chair. The dentist gave the man some medicine to make him sleep. Then, he looked into the man’s mouth and pulled out all the bad teeth. As soon as the man woke up(醒来), he said in a low voice, “Quick, doctor, quick.”

“It’s all right now,” the dentist told him, “It’s over.”

“You don’t understand,” said the man, “I came to tell you your house is on fire.”

根据短文内容,选择正确答案。

小题1:The story happened        .

A.in the morning

B.in the afternoon

C.in the evening

D.at night小题2:When the man ran in, the dentist thought he must be         .

A.over

B.ill

C.all right

D.rich小题3:The man          after he took some medicine.

A.began to work

B.began to cry

C.went home

D.went to sleep小题4:The dentist pulled          out of the man’s mouth.

A.a tooth

B.a bad tooth

C.all the bad teeth

D.all the teeth小题5:The man ran in          .

A.bacause he was ill

B.because he wanted to sleep

C.to tell the dentist that he was all right

D.to tell the dentist that his house was on fire

题型:判断题

在R上定义的函数f(x)是偶函数,且f(x)=f(2-x).若f(x)在区间[1,2]上是减函数,则f(x)

(  )

A.在区间[-2,-1]上是增函数,在区间[3,4]上是增函数

B.在区间[-2,-1]上是增函数,在区间[3,4]上是减函数

C.在区间[-2,-1]上是减函数,在区间[3,4]上是增函数

D.在区间[-2,-1]上是减函数,在区间[3,4]上是减函数

题型:判断题

连词成句。

1. for   it   lunch   time   is

                                             .

2. canteen   the   that   is 

                                             ?

3. there   many   desks   are 

                                             .

4. it   not   computer   the   is 

                                             .

5. am   I   full

                                             .

题型:判断题

某手表厂用于清洗的汽油,每昼夜需用量只有20kg,则其中间仓库的储量可适当调整到存放()昼夜的用量。

A.1~2

B.2~3

C.3~4

D.5~6

题型:判断题

在微机的配置中常看到“处理器Pentium Ⅲ/800”字样,其中数字800表示( )。

A.处理器的时钟主频是800MHz

B.处理器的运算速度是800MIPS

C.处理器的产品设计系列号是第800号

D.处理器与内存间的数据交换速率是800KB/S

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