应对应激以减轻紧张的措施是【 】A．分散对消极应激源的注意 B．努力忘却消极应激的情

阅读理解。

     Look! This is a picture of my family. My mother is a doctor. My father is a teacher. This is my brother. His name is Harry. He's twelve. He's a student. That is my grandmother. Ah, this is me. My name is May. I'm ten. I'm a student. Harry and I are in the same school. 

根据短文内容，判断下列句子正（T）、误（F）。

( )1. This is a picture of my family.

( )2. My mother is a teacher.

( )3. Harry is my brother.

( )4. Harry is twenty.

( )5. Harry and I are in the same school.

订购周期是指从确定对某种商品有需求到需求被满足之间的时间间隔，也称为提前期。

球落入整修地，球员可以免罚抛球

在主节点处固定横向水平杆、纵向水平杆、剪刀撑、横向斜撑等用的直角扣件、旋转扣件的中心点的相互距离不应大于（）mm。

A.100.0

B.150.0

C.200.0

D.250.0