烧结配料工勤观察原料粒度，颜色等情况，易发现（）现象。
A．配重不足
B．碱度偏低
C．混料
参考答案：C
—What is the _______ of this word?
—It _______ to go on foot. [ ]
A. meaning, mean
B. means, mean
C. means, means
D. meaning, means
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