通常情况下，绞车传感器的测量范围以大钩高度计（）
A、0～l0m
B、0～20m
C、0～30m
D、0～40m
参考答案：D
配制好的0.5Mdarland比浊管可以存放（）
A.14天
B.30天
C.60天
D.半年
E.一年
— How was your job interview?
— Oh, I couldn't feel ________. I hardly answered most of the questions they asked. [ ]
A. better
B. easier
C. happier
D. worse
