最适当的检查是A.脑电图B.腰穿查脑脊液C.血常规D.血糖E.ECG 发布时间:2018-01-06 04:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 最适当的检查是A.脑电图B.腰穿查脑脊液C.血常规D.血糖E.ECG
题型:单项选择题 A、B、C、D四种短周期元素,A原子的M层比C原子的M层少1个电子,C原子L层比A原子L层多2个电子,A、B同族,C、D同周期,且D为该周期离子半径最小的元素。下列叙述不正确的是( )A.离子半径由小到大的顺序为:A< C < D < B B.气态氢化物稳定性:B < A;沸点:A > B C.原子半径由大到小的顺序为:C > D > B > A D.元素B、C、D的最高价氧化物对应水化物能够两两反应生成盐和水 查看答案
题型:单项选择题 Fair and(1)competition in government procurement around the world is good business and good public policy. Competitive pricing, product (2)and performance improvements result from competitive practices and help ensure that government authorities get the best (3)for the public they serve.A. helpB. serverC. valueD. policy 查看答案