系统误差决定了测量的准确度。系统误差越小,测量结果越准确。( )
参考答案:对
— Are these cauliflowers?
— ________________.[ ]
A. No, they aren't
B. No, they are
丁二烯储存应加入阻聚剂并严格与空气隔绝,储罐应氮封。丁二烯储罐外应设喷淋水冷却设施。