外观呈黑色,光泽强,质地均匀而脆,容易破碎成棱角状小块是镜煤。
参考答案:对
Which of the following is correct for the underlined word in the sentence? I had some milk and bread for breakfast today.
A./bred/
B./bri:d/
C./bræd/
D./breəd/
浇制≤C25混凝土用的碎石和卵石,其含泥量不应超过()%。
A.2
B.3
C.5
D.8