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【多选题】
关于EP6发动机变排量机油泵,下列说法正确的是A.
齿轮泵接触面减少，机油流量也就会降低
B.
齿轮泵接触面增大，机油流量也就会提高
C.
挡机油泵出现故障时，机油压力将维持在5.7+/-0.2 巴
D.
以上说法均不正确
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【简答题】According to the race rules, dogs for race must have ______.
【单选题】The underlined word‘‘leg’’ in 'Bicycle tour and race' probably means [
A.
] race [
B.
] practice [ C] part of the training [ D] part of the tour
【单选题】During recent years we have heard much about 'race': how this race does certain things and that race believes certain things and so on. Yet, the【C1】______ phenomenon of race consists of a few surface ...
A.
complete
B.
full
C.
total
D.
whole
【单选题】During recent years we have heard much about 'race': how this race does certain things and that race believes certain things and so on. Yet, the 【21】______ phenomenon of race consists of a few surface...
A.
complete
B.
full
C.
total
D.
whole
【简答题】A．Education, religion, race and social class. B．Education and race. C．Religion, race and social class. D．Religion and social class.
【简答题】通过结晶，溶液中大部分的杂质会留在母液中，再通过过滤、 ，可以得到纯度较高的晶体
【简答题】According the race rules, dogs for race must have ______.
【简答题】通过结晶，溶液中大部分的杂质会留在母液中，再通过 ，可以得到纯度较高的晶体
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