漂洗段4号漂洗槽的HCL浓度约为（）g/L A.0.005～0.008 B.0.00

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问题单项选择题

漂洗段4号漂洗槽的HCL浓度约为（）g/L

A.0.005～0.008

B.0.008～0.01

C.0.009～0.012

D.0.012～0.014

答案

参考答案：B

选择题

It was a time______many sad things happened to her and she had to______them.

A．that; be on good terms with

B．which; bear

C．in which; come to terms with

D．when; come to term with

单项选择题

最易患龋的恒牙是

A．上前牙
B．下颌双尖牙
C．尖牙
D．第一恒磨牙
E．第二恒磨牙