所谓“实质性等同”是指（）。 A.转基因农作物中的成分完全没有发生改变 B.转基因农

阅读理解。

     The Earth is a planet and it goes around the Sun．Seven other planets also go around the Sun．None of them has an environment with air,so people and things cannot grow．The Sun and its planets are called the solar system．

The solar system is a small part of our galaxy．

     The stars we see at night are the suns in other solar systems．There are |

more than 200 billion stars in our galaxy,called the Milky Way,and our Sun is only one of them．

     But scientists have discovered many other galaxies in the universe．They are a long way away and their light has travelled for many years to reach us．It is hard to understand how large the universe is．

     Scientists have sent lots of spacecraft to look at other planets in our solar system,and some spacecraft have gong beyond the solar system．However,no one has discovered any life in space yet．

     But why has no one from other planets sent us a message?Have they tried

to send information to us?With so many stars in the universe,are we alone,or is there life out there in space?We don't know．．．yet．

根据学过的课文,判断正(T)误(F)

(     )1．The Sun is one of the Earth planets．

(     )2．There is more than one galaxy in our solar system．

(     )3．There are more than 200 billion stars in the Milky Way．

(     )4．Scientists have found life on other planets．

( )5．They've received no messages from space．

川芎不宜治疗的头痛是（）。

A.风寒头痛

B.肝阳头痛

C.风湿头痛

D.血虚头痛

E.血瘀头痛

       1938—1944年，我国科技人员在大后方注册的专利共431件，比此前23年全国的总和增长了157％，其中机器、电器、交通工具、化学药品类居多。形成这一现象的主要原因是 [ ]

A．科技人员的内迁

B．军工企业的激增　

C．民营工业的发展　　

D．战时需求的刺激

施工安全管理的工作目标要求按期开展安全检查活动，对查出的事故隐患的整改应达到整改“五定”要求，即：定整改责任人、定整改措施、定整改完成时间、定整改完成人和( )。

A) 定整改验收入
B) 定整改预算
C) 定整改监督人
D) 定整改结果

试述剖分式滑动轴承顶部间隙测量计算方法，超过标准如何处理？