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【单选题】
George Valensi's patent lasted until 1971 because ______.A.
there were not enough TV stations to provide color programs
B.
the color TV receiver was not available until that time
C.
nobody would offer any reward for his patent prior to that time
D.
his patent could not be put to use for an unusually long time
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【单选题】Which of the listed bearing types is an example of a solid bearing?
A.
Piston wrist pin bushing
B.
turbine bearing
C.
Spring bearing
D.
Diesel engine main bearing
【单选题】Which of the following is used to monitor the bearing of a radar target in relation to your location?
A.
the electronic bearing line
B.
the variable range marker
C.
anti-rain clutter
D.
the anti-sea clutter
【单选题】Which of the following is used to monitor the bearing of a radar target in relation to your location?
A.
the electronic bearing line
B.
the variable range maker
C.
the anti-rain clutter
D.
the anti-sea clutter
【简答题】苦闷的小张 小张在研究生即将毕业之际,经由校园招聘,被录入当地区文化广播和新闻出版局进行为期两个月的学习实践。 初来乍到,小张被安排在了政策法规和行政审批科学习实践,协助曹科长宣传政策法规、净化群众文化环境并负责网络与文化经营许可证的审批与换发。而目前小张跟着曹科长做的最多的就是整个区内网吧文化经营许可证的换发工作。 一日,曹科长把小张叫过来说:小张啊,有一个网吧的许可证在省厅那里打印出来了,你下...
【单选题】On two occasions had she ____ at him ____ a crack in the wall.
A.
peeked ... at
B.
peeked ... through
C.
peeked ... by
D.
peeked ... in
【单选题】Which of the following is used to monitor the bearing of a radar target in relation to your location?
A.
the electronic bearing line
B.
the variable range marker
C.
the anti-rain clutter
D.
the anti-sea clutter
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