下列哪些属于高效液相色谱检测器（）
A、紫外检测器
B、荧光检测器
C、示差遮光检测器
D、电化学检测器
参考答案：A,B,C,D
The office is _______ that one, so we can have our meeting there.
A．six times bigger as
B．six times as big as
C．six times big as
D．six times as bigger as
钢中碳的含量超过1．00％时，钢材的性能表现为（ ）。
A．塑性大
B．强度下降
C．硬度大
D．易于加工
