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【单选题】
在JAVA中ArrayList类实现了可变大小的数组,便于遍历元素和随机访问元素,已知获得了ArrayList类的对象bookTypeList,则下列语句中能够实现判断列表中是否存在字符串“小说”的是( )。A.
bookTypeList.add('小说');
B.
bookTypeList.get('小说');
C.
bookTypeList.contains('小说');
D.
bookTypeList.remove('小说');
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【单选题】The absolute value of the price elasticity of demand for gasoline in the long run has been estimated to be 1.5. If an extended war in the Middle East caused the price of oil (from which gasoline is ma...
A.
. Total expenditures would rise.
B.
. Total expenditures would fall.
C.
. Total expenditures would remain unchanged.
D.
. Not enough information is given to answer the question.
【单选题】" wear criterion" means the allowable maximum value of average wear in the middle part ·of the wear zone on ( ) .
A.
the major flank face
B.
the rake face
C.
the major cutting edge
D.
machining surface
【单选题】双源CT的临床应用优势,错误的是
A.
时间分辨能力高
B.
时间分辨力达83毫秒
C.
一次心动周期采集心脏图像
D.
一次扫描可获得双能量CT数据
E.
心脏检查辐射剂量提高
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