在中和反应中两种反应物的量恰当,反应后没有剩余时,反应物的PH值()
A.=7
B.>7
C.<7
D.不一定
参考答案:D
一个10岁的小孩在韦克斯勒的智力测验中得分是78分,该年龄团体的平均分数是68分,标准差是5分,则他的智商是( )
A.120
B.140
C.130
D.150
The ship is now too much listing to portside. Which is the best way to keep the vessel upright?().
A.Put all the remaining cargo on starboard side
B.Put light cargo on starboardside and heavy cargo on port side
C.Put light cargo on port side and heavy cargo on starboard side
D.A,B,C are all correct