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【简答题】
已知 C20 混凝土的实验室配合比为 1:2.55:5.12 ,水灰比为 0.65 ,经测定砂的含水率为 3% ,石子的含水率为 1% ,则施工配合比为: 。
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举一反三
【单选题】When the author needed a post-office box, ______.
A.
many had applied for post-office boxes before him
B.
he asked to put his name on a waiting list
C.
he tried to see the postmaster
D.
he wrote the postmaster a note of appreciation
【单选题】The brave man died, leaving his young wife nothing but a ____cottage.
A.
breaking
B.
broken
C.
break
D.
to break
【单选题】If you want to know about programmes of next week, which channel will you choose?
A.
Channel 1.
B.
Channel 2.
C.
Both of them.
【简答题】听下面一段对话，回答第1-3题。 1. When and what channel is the reality show? [ ] A. At 9:00 on channel 2. B. At 7:00 on channel 5. C. At 8:00 on channel 6. 2. How does the man feel about watching Hancock on TV?...
【单选题】How does Henry book the tickets?
A.
By telephoning the box office.
B.
By getting to the box office himself.
C.
By paying for the tickets at his office.
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