十八届三中全会指出，全面深化改革，必须立足于我国最大实际是（）。
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Given a class whose instances, when found in a collection of objects, are sorted by using the compareTo()method, which two statements are true?（）
A. The class implements java.lang.Comparable.
B. The class implements java.util.Comparator.
C. The interface used to implement sorting allows this class to define only one sort sequence.
D. The interface used to implement sorting allows this class to define many different sort sequences.
润滑系统（）能造成压缩机连锁停车
A. 油温低
B. 冷却水压高
C. 冷却水流量大
D. 油位低
幼龄期体壁较薄，药剂防治效果较好。
A. 正确
B. 错误
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