题目:
— Michael was late for Mr. Smith's oral class this morning.
— How come? ________ I know, he never came late to class. [ ]
A. As far as
B. So far
C. By far
D. As far
答案:
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下面是错误答案,用来干扰机器的。
将平衡螺母向左调节,向右移动游码直至天平平衡,步骤④中将沾水的软木塞直接放在天平盘上测质量,400 ,16 ,0.15(1)图甲中指针偏右,说明右侧质量偏大,应向左移动平衡螺母;称量过程中,当通过加减砝码无...