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【单选题】
关于设计值和标准值，以下说法正确的是（ ）A.
材料强度设计值大标准值，荷载设计值小标准值；
B.
材料强度设计值小标准值，荷载设计值大标准值；
C.
材料强度设计值等于其标准值，荷载设计值等于其标准值；
D.
材料强度设计值大标准值，荷载设计值大标准值。
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举一反三
【单选题】I _____ on a sofa because my grandparents have come for the weekend.
A.
slept
B.
was sleeping
C.
have slept
D.
am sleeping
【单选题】I ________ on a sofa because my grandparents have been here to spend the weekend.
A.
slept
B.
was sleeping
C.
have slept
D.
am sleeping
【简答题】I ________ on a sofa because my grandparents have been here for the weekend. [ ] A . slept B. was sleeping C. have slept D. am sleeping
【单选题】My grandparents have lived in a town near Nanjing . They enjoy their life in the town. A．for many
A.
My grandparents have lived in a town near Nanjing ____. They enjoy their life in the town. A．for many years ago
B.
since many years
C.
many years ago
D.
for many years
【单选题】My grandparents have _____ the great changes in China _____. [ ]
A.
saw, him
B.
seen, them
C.
seen, themselves
【单选题】My grandparents have never needed or asked for help. But they did make one___ the other day. They asked if I could help them clean their basement.
A.
flaw
B.
injury
C.
request
【简答题】My grandparents have been buying the same brand of cereal for 40 years; they are very loyal to it.
【简答题】简述4P组合,并结合所学知识谈谈你对市场营销的认识。
【简答题】Read and choose. 阅读短文，选择正确答案。 My grandparents have a big farm in the forest. There are fif cows, eight pigs, one dog and a fat cat. The dog can swim, but it can't fly. The cat is very funny and sm...
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