【单选题】R 元素的原子有 3 个电子层, M 层电子数是 K 层电子数的 3 倍,对 R 元素的判断不正确的是
【单选题】The main purpose of warming the parts of the main engine is ____.
B.
to reduce low temperature corrosion
C.
to improve firing and starting performance
【单选题】The main purpose of changing main engine to electronic controlled is not to .
A.
control fuel injection time more precisely
B.
control fuel injection rate more precisely
C.
meet the environmental requirements
D.
meet high engine speed requirements
【单选题】R元素的原子有3个电子层,M层电子数是K层电子数的3倍,下列判断不正确的是
【单选题】The main purpose of this passage is to ________. TThe main purpose of this passage is to ________. he main purpose of this passage is to ________.
A.
provide scholarship information for Oxford applicants
B.
give an introduction to Oxford University in general
C.
explain the teaching and research systems of Oxford
D.
introduce the long history of Oxford
【判断题】如果汽油的市场均衡价格是7元,现在政府规定汽油的价格上限为8元,那么结果将是汽油短缺。( )
【单选题】In relation to exclusion clauses, which of the following describes the main purpose rule?
A.
the purpose of an exclusion clause is to give business efficacy to a contract
B.
the purpose of an exclusion clause is not to prevent the main purpose of the contract
C.
the purpose of an exclusion clause is to help a weaker party avoid unfair contractual obligations