汽车过衡时，应按指定进车方向驶入，车辆可停留在称台任一位置。
参考答案：错
解析：汽车过衡时，应按指定进车方向驶入，车辆应停留在称台中心位置。
It was not until yesterday ______ he returned _______ to know the news. [ ]
A. that ; that I got
B. when ; that did I get
C. when ; that I got
D. that ; that did I get
平均装量6.0g以上时，颗粒剂的装量差异限度要求是（）
A.±5%
B.±7%
C.±8%
D.±10%
E.±15%
