供热钢管的材质和壁厚()应符合国家现行钢管制造技术标准。A．要求 B．偏差 C．规定

完形填空。

Mary and Donald Smith lived in the same building. Donald  1  a toy company. One day Donald gave Mary. the 4-year-old girl. a new toy. She played with it and said. "This is fun! A few weeks later Donald gave her  2   toy. She played with it and then said."I'm not  3   in this toy. It doesn't work." For years Donald gave Mary new toys. and she gave him very good  4   about the toys.      When Mary was 13 years old. Donald showed her a new ball. Mary wanted to  5  the ball with small stones to make it  6 .The company made this change. Mary's idea was a great success! The company sold thousands of the balls.      That Christmas. Donald gave Mary an  7  gift. He made her vice-president (副总裁) of the toy company. She made $200,000 a year. Her job was to see  8  the new toys were fun. She worked  9  three or four hours a day at her job, then she had to do her homework.      Today Mary works at a college. The little vice-president with bright ideas helps students think about their  10  .

( )1. A. owned    ( )2  A. other    ( )3. A. excited  ( )4. A. ways     ( )5  A. fill     ( )6. A. noisy    ( )7. A. special  ( )8. A. when     ( )9. A. of       ( )10. A. company B. rioted     B. others      B. interested B. designs    B. full       B. quiet      B. awful      B. if         B. in         B. toys       C. owns      C. the other C. relaxed   C. questions C. add       C. light     C. amazing   C. as        C. for       C. homework  D. closes  D. another D. bored   D. ideas   D. pour    D. future  D. useful  D. since   D. with    D. future

­­­­­­        the responsibilities of the family, I worked hard to earn a living.

A．Being burdened with

B．Burdened with

C．Burdening with

D．To burden with

相邻房地产的权利人应正确处理相邻关系，相邻关系的产生是因房地产具有（）的特性。

A.易受限制

B.独一无二

C.相互影响

D.不可移动

有一位女教师，下肢静脉曲张，术中可见静脉腔有多个褐色物，堵塞管腔，该褐色物最可能的病变是（）

A.静脉内血栓栓子

B.静脉内凝血

C.静脉内血栓

D.静脉内瘤栓

E.静脉石

某品牌电动自行车的铭牌如下；

车型：20吋  车轮直径：508mm	电池规格：36V 12A•h（安•时）
整车质量：40kg	额定转速：210r/min（转/分）
电机：后轮驱动、直流永磁式电机	额定工作电压/电流：36V/5A

根据此铭牌中的有关数据，可知该车电机的额定功率为______W；如果以额定功率在平直公路上行驶，一次充满电最长可以行驶的时间为______h．