11、本实验测量弹簧弹性系数时，砝码盘可以挂着金属框进行实验，这时候的零点和不挂金属框时的零点位置不同。 In this experiment, when measuring the spring elastic coefficient, the weight plate can be hung with a metal frame, and the zero point position is different when the metal frame is not hung.

A.零点读数的位置是固定的 The position of the zero reading is fixed###SXB###B.在每次测量的过程中，零点读数的位置可以移动 During each measurement, the position of the zero reading can be moved###SXB###C.零点读数的位置可以根据测量情况调整，其位置可以改变 The position of zero point reading can be adjusted according to the measurement situation, and its position can be changed###SXB###D.不挂金属框测量弹簧的倔强系数时的零点读数，与挂上金属框测量表面张力时的零点读数是一样的。 The zero reading when measuring the spring's stubborn coefficient without han

A.液体的温度变化 Temperature change of liquid

B.与液面接触金属框的水平度 Levelness of metal frame in contact with liquid surface

C.金属框的干净程度 Cleanliness of metal frames

D.砝码盘的水平度 Levelness of the weight plate

A.Y.是

B.N.否