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【单选题】
Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. Thomas Alva Edison lit up the world with his invention of the electric light. Without him, the world might still be a dark place. However, the electric light was not his only invention. He also invented the phonograph(留声机), the motion picture camera, and over 1,200 other things. About every two weeks he created something new. Thomas A. Edison was born in Milan, Ohio, on February 11, 1847. His family moved to Port Huron, Michigan, when he was seven years old. Surprisingly, he attended school for only two months. His mother, a former teacher, taught him a few things, but Thomas was mostly self-educated. His natural curiosity(好奇) led him to start experimenting at a young age with electrical and mechanical things at home. When he was 12 years old, he got his first job. He became a newsboy on a train that ran between Port Huron and Detroit. He set up a laboratory in a baggage car of the train so that he could continue his experiments in his spare time. Unfortunately, his first work experience did not end well. Thomas was fired when he accidentally(意外地) set fire to the floor of the baggage car. Thomas then worked for five years as a telegraph operator, but he continued to spend much of his time on the job conducting experiments. He got his first patent(专利) in 1868 for a vote recorder run by electricity. However, the vote recorder was not a success. In 1870, he sold another invention, a stock-ticker, for $40,000. A stock-ticker is a machine that automatically prints stock prices on a tape. He was then able to build his first shop in Newark, New Jersey. Thomas Edison was totally deaf in one ear and hard of hearing in the other, but thought of his deafness as a blessing in many ways. It kept conversations short, so that he could have more time for work. He called himself a 'two-shift man' because he worked 16 out of every 24 hours. Sometimes he worked so intensely that his wife had to remind him to sleep and eat. Thomas Edison died at the age of 84 on October 18, 1931, at his estate in West Orange, New Jersey. He left numerous inventions that improved the quality of life all over the world. Thomas Edison worked ______ hours a day so he called himself a 'two-shift man'.
A.
24
B.
8
C.
12
D.
16
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【多选题】下列几组用半透膜隔开的溶液,在相同温度下水从左向右渗透的是
A.
3%的C6H12O6|半透膜|2%的NaCl
B.
0.050mol·kg-1的NaCl|半透膜|0.080mol·kg-1的C6H12O6
C.
0.050mol·kg-1的尿素|半透膜|0.050mol·kg-1的蔗糖
D.
0.050mol·kg-1的MgSO4|半透膜|0.050mol·kg-1的CaCl2
【单选题】下列几组用半透膜隔开的溶液,相同温度下水从右向左渗透的是
A.
5% 的 C 6 H 12 O 6 | 半透膜 |2% 的 NaCl
B.
0.050 mol·kg -1 的 NaCl| 半透膜 |0.080 mol·kg -1 的 C 6 H 12 O 6
C.
0.050 mol·kg -1 的尿素 | 半透膜 |0.050 mol·kg -1 的蔗糖
D.
0.050 mol·kg -1 的 MgSO 4 | 半透膜 |0.050 mol·kg -1 的 CaCl 2
【单选题】下列几组用半透膜隔开的溶液,在相同温度下水从右向左渗透的是
A.
3% 的 C 6 H 12 O 6 | 半透膜 |2% 的 NaCl
B.
0.050   mol·kg -1 的 NaCl| 半透膜 |0.080   mol·kg -1 的 C 6 H 12 O 6
C.
0.050   mol·kg -1 的尿素 | 半透膜 |0.050   mol·kg -1 的蔗糖
D.
0.050   mol·kg -1 的 MgSO 4 | 半透膜 |0.050   mol·kg -1 的 CaCl 2
【单选题】下列几组用半透膜隔开的溶液,在相同温度下水从右向左渗透的是( )。
A.
5 % 的 C 6 H 12 O 6 | 半透膜 |2 % 的 NaCl
B.
0.050 mol/kg 的 NaCl| 半透膜 |0.080 mol/kg 的 C 6 H 12 O 6
C.
0.050 mol/kg 的尿素 | 半透膜 |0.050 mol/kg 的蔗糖
D.
0.90 % 的 NaCl| 半透膜 |2 % 的 NaCl
【单选题】下列几组用半透膜隔开的溶液,在相同温度下水从右向左渗透的是
A.
50g·L-1的C6H2O溶液|半透膜|20g·L-1的NaCl溶液
B.
0.050mol·kg-的NaCl溶液半透膜|0.080mol·kg的C2H5OH溶液
C.
0.050mol·kg-1的尿素溶液|半透膜10.050mol·kg-1的蔗糖溶液
D.
Q.050mol·kg-1的MgSO4溶液半透膜10.050mol·kg-1的 CaCl2溶液
【单选题】下列哪种高聚物存在粘流温度( )。
A.
聚四氟乙烯
B.
硫化橡胶
C.
聚碳酸酯
【单选题】下列几组用半透膜隔开的溶液,在相同温度下水从右向左渗透的是?
A.
5%的C6H12O6|半透膜|0.9%的NaCl
B.
0.050mol•kg-1的NaCl|半透膜|0.080mol•kg-1的C6H12O6
C.
0.050mol•kg-1的尿素|半透膜|0.050mol•kg-1的蔗糖
D.
0.050mol•kg-1的MgSO4|半透膜|0.050mol•kg-1的CaCl2
【单选题】下列几组用半透膜隔开的溶液,在相同温度下水从右向左渗透的是( )。
A.
0.2 mol·L-1的蔗糖|半透膜|0.1 mol·L-1的NaCl
B.
0.050 mol·kg-1的KCl|半透膜|0.080 mol·kg-1的C6H12O6
C.
0.050 mol·kg-1的尿素|半透膜|0.050 mol·kg-1的蔗糖
D.
0.050 mol·kg-1的MgSO4|半透膜|0.050 mol·kg-1的CaCl2
【单选题】三轴式变速器只要应用在()的布置形式
A.
前置前驱
B.
.前置后驱
C.
中置后驱
D.
.全轮驱动
【单选题】下列几组用半透膜隔开的溶液,在相同温度下水从右向左渗透的是
A.
5% 的 C 6 H 12 O 6 | 半透膜 |2% 的 NaCl
B.
0.050 mol·kg -1 的 NaCl| 半透膜 |0.080 mol·kg -1 的 C 6 H 12 O 6
C.
0.050 mol·kg -1 的尿素 | 半透膜 |0.050 mol·kg -1 的蔗糖
D.
0.050 mol·kg -1 的 MgSO 4 | 半透膜 |0.050 mol·kg -1 的 CaCl 2
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