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参考答案:错
已知X和Y两种物质混合后能发生反应,设X物质的相对分子质量为Ax,Y物质的相对分子质量为Ay,当X和Y按质量比Ax:Ay反应后,溶液的pH>7,如果X和Y按质量比2Ax:Ay,则反应后溶液的pH=7,X、Y应是下列物质中的( )
A.NaCl和Ba(OH)2
B.HCl和Ba(OH)2
C.HCI和NaOH
D.NaOH和H2SO4
A.People want to use their sick days when they’re not actually sick.
B.People get in trouble with their boss at their place of work.
C.Employees are dedicated to their job although they’re under no pressure.
D.Employees go to work even when they are sick.