问题
单项选择题
工件以平面定位时的定位误差，主要是由（）引起的。
A.基准重合
B.基准不重合
C.定位副不准确
D.测量工具
答案
参考答案：B
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工件以平面定位时的定位误差，主要是由（）引起的。
A.基准重合
B.基准不重合
C.定位副不准确
D.测量工具
参考答案：B
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| The Conservative Party leader David Cameron has been elected British Prime Minister. Labor Party's Gordon Brown, the 1 Prime Minister, had to 2 the tears as he said his goodbyes outside of 10 Downing St. And Cameron is the youngest UK prime minister in almost 200 years. According to electoral rules, the leader of the party that wins a majority in Parliament becomes the new prime minister and forms the new government. If no party wins a majority, a coalition (联合) government 3 several parties may be formed. The head of the coalition party that 4 most seats in Parliament probably becomes the new prime minister. In Britain's May 6 parliamentary 5 , Cameron's Conservative Party won the most seats, but did not get a majority. After negotiations, with an agreement 6 between the Conservatives and the third-placed Liberal Democrats, a governing coalition was formed. Cameron has grown 7 a shy primary school student with 8 school reports into a famous political 9 . He is reportedly a 10 of King William IV (1765-1837). Cameron studied at the elite Eton College, for centuries the school 11 the choice for the nation's wealthiest people to send their male children to. He went 12 to Oxford University, where he graduated with a degree in philosophy, politics and economics. Once at primary school, Cameron had the poorest school report in the class. At Eton, Cameron was a problem boy. In 1983, he was suspected of taking drugs. He was punished, and 13 ordered to copy 500 lines of Latin text. He 14 the incident and worked harder. Cameron was very 15 at Oxford. He captained the tennis team there. He was a member of a dining society. After graduation, he 16 1 politics. In 2001 Cameron became a member of Parliament and in 2005, at the age of 38, was elected the leader of the Conservative Party. Now he has been elected the head of a country 17 deep economic troubles. At least 1.3 million people have been 18 in the serious financial crisis. British voters will be looking to see 19 the program his party has proposed to deal with the problem 20 do anything to help. | ||||
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