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【判断题】
常用密封件有:O型密封圈、Y型密封圈、V型密封圈等。()
A.
正确
B.
错误
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【单选题】________________of the students who took part in the military training(军训) is 450.
A.
A number
B.
A lot
C.
Lots
D.
The number
【简答题】They took a final look at Iron Mike, still intact in the darkness.
【单选题】Jenny worked hard before the final examination, and ____.She got an A. A.took off           
B.
showed off      
C.
put off        
D.
paid off
【单选题】After liquidating non-cash assets and paying creditors (liabilities), account balances in the Hi & Lo Partnership are: Cash $32,000 Hi, capital $15,000 Lo, capital $17,000 The partners share profits (...
A.
Dr    Hi, capital    16,000 Dr    Lo, capital    16,000 Cr        Cash                32,000
B.
Dr    Hi, capital    15,000 Dr    Lo, capital    17,000 Cr        Cash                32,000
C.
Dr    Cash            32,000 Cr        Hi, capital    15,000 Cr        Lo, capital    17,000
D.
Dr    Cash            32,000 Cr        Hi, capital    16,000 Cr        Lo, capital    16,000
【单选题】How would a man be punished if he took more than his share of salt in the 16m century?
A.
Lose all his salt.
B.
Be thrown into prison.
C.
Lose an ear.
D.
Lose an eye.
【简答题】已知宗地界址点的坐标,求该宗地的面积 A(300,200) B(191.932,263.515) C(85.816,199.997) D(193.885,139.858)
【单选题】They took a final look at Iron Mike, still intact in the darkness.
A.
他们最后看了铁麦克一眼--它依旧安然无恙地耸立在黑暗中。
B.
他们最后看了看麦克的铁像--它仍然完好无缺地耸立在黑暗中。
C.
他们最后瞧了瞧铁匠麦克--他还是纹丝不动地站在黑夜中。
【简答题】某市对大气进行监测,发现该市首要污染物为可吸入颗粒物PM 2.5 (直径小于等于2.5 μm的悬浮颗粒物),其主要来源为燃煤、机动车尾气等.因此,对PM 2.5 、SO 2 、NO x 等进行研究具有重要意义. 请回答下列问题: (1)将PM 2.5 样本用蒸馏水处理制成待测试样. 若测得该试样所含水溶性无机离子的化学组分及其平均浓度如下表: 离子 K + Na + NH +4 SO 2-4 NO...
【单选题】数据库系统支持数据的逻辑独立性依靠的是( )。
A.
DDL语言和DML语言完全独立
B.
数据库的三级模式结构
C.
定义完整性约束条件
D.
模式分级及各级模式之间的映像机制
【单选题】____ took me two weeks to prepare my final paper.
A.
What
B.
That
C.
Which
D.
It
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