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【简答题】
配制混凝土时为什么用合理砂率(最率)?影响合理砂率的因素有哪些?
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Both men genuinely regretted_______.
A.
their leave
B.
to have to leave ooü
C.
having to leave
D.
they must have left
【简答题】等价轨道处于 、 和 状态时,具有较低的能量,比较稳定。这一规律通常又称为 特例。
【判断题】As to a genuinely debatable topic, both sides are reasonable in some ways.
A.
正确
B.
错误
【单选题】When a passing tanker rescued them five days later, both men were genuinely sorry that they had to leave.
A.
sincerely
B.
really
C.
somewhat
【单选题】 is said the number-one killer of both men and women over the past few years in that region.
A.
being
B.
to be
C.
to have been
D.
having been
【单选题】听力原文：(A) The oven operates with gas. (B) Two men are repairs. (C) Both men are sitting down. (D) Their tools are put away.
A.
B.
C.
【单选题】 is said______the No. 1 killer of both men and women over the past few years in that region.
A.
being
B.
to be
C.
to have been
D.
having been
【单选题】Both men genuinely regretted_________________.
A.
their leave
B.
to have to leave
C.
having to leave
D.
they must have left
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