此题为判断题(对,错)。
第1题:
测量葡萄糖溶液旋光度时,零点校正是指: When measuring the optical rotation of glucose solution, zero correction refers to
A.旋光计测量室放入蒸馏水试管,找出弱照度的均匀视场(零度视场),记下此时刻度盘的左右读数平均值,即零点校正值 Put tube contained distilled water into the polarimeter measuring chamber, find out the uniform field of view (zero degree field of view) with weak illumination, and record the average reading values from the left and right dial at this time, that is, the zero correction value#B.旋光计测量室不放任何试管,找出弱照度的均匀暗视场,记下此时刻度盘的左右读数平均值,即零点校正值。 Without any test tube in the polarimeter measuring chambe第2题:
2、测量葡萄糖溶液旋光度时,零点校正是指: When measuring the optical rotation of glucose solution, zero correction refers to
A.旋光计测量室放入蒸馏水试管,找出弱照度的均匀视场(零度视场),记下此时刻度盘的左右读数平均值,即零点校正值 Put tube contained distilled water into the polarimeter measuring chamber, find out the uniform field of view (zero degree field of view) with weak illumination, and record the average reading values from the left and right dial at this time, that is, the zero correction value#B.旋光计测量室不放任何试管,找出弱照度的均匀暗视场,记下此时刻度盘的左右读数平均值,即零点校正值。 Without any test tube in the polarimeter measuring chambe第3题:
内径百分表测量时,要特别注意偏差数值的正、负符号,当表针按顺时针方向未达到零点,此时相对于零位的偏差是 值。
A.正
B.负
C.可能正,也可能负
D.不好判断
第4题:
1、关于零点读数,以下说法正确的是: For zero readings, what is the correct statement of the following options?
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第5题:
1、关于零点读数,以下说法正确的是: For zero readings, what is the correct statement of the following options?
A.零点读数的位置是固定的 The position of the zero reading is fixed#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#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#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