石油中的碳氢化合物所占比例约（）。A、70%以上 B、80%以上 C、90%以下 D

阅读短文，判断正（T）误（F）。

     A city is a very big place. Sometimes it's a lonely place, too. There are thousands of people in a city, but

some of them don't have any friends. How about you? Do you have a lot of friends? If you don't, make friends

today. If you do, make another friend today. Pick a stranger at your job or school. Walk up to him or her and

say,"Hello. My name' s....What' s your name?" Start with a conversation(谈话). Smile, listen carefully, and

show interest in your new friend' s answers. Ask "Where are you from?" and "Do you like this city?" That' s

a good way to start.

( )1. A city is a very big and noisy and lonely place.                                                        

( )2. Everyone in the city has many friends.                                                                  

( )3. The paragraph tells us not to make friends in a city.                                                   

( )4. When you want to make friends with someone, please say at first, "What's your name?  

           How old are you?"

( )5. It's a good thing to make friends with others.                                                          

下列哪些病理类型隶属于增生性肾炎（）。

A.局灶性节段性肾小球肾炎

B.系膜增生性肾小球肾炎

C.系膜毛细血管性肾小球肾炎

D.新月体和坏死性肾小球肾炎

E.毛细血管内增生性肾小球肾炎

如图所示，匀速转动的水平圆盘上，沿半径方向放着用细线连着的质量相等的物体A和B，它们与盘间的动摩擦因数相等。当圆盘转速加快到两物体刚要滑动且尚未滑动的状态时，烧断细线，则两物体的运动情况是

A.两物体均沿切线方向滑动

B.两物体均沿半径方向做远离圆心的运动

C.两物体随盘一起做匀速圆周运动，不发生滑动

D.物体A随盘一起做匀速圆周运动，不发生滑动

五行中“金”的特性是()

A．炎上

B．润下

C．稼穑

D．曲直

E．从革

某站到达专用线机械冷藏车车组，由于收货人责任超过了规定的卸车时间，应核收哪些费用？