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【单选题】They went for a long walk _____ they were feeling very tired.
A.
although
B.
because
C.
however
D.
despite
【简答题】阅读，并判断正误。 One day, two young men went to a small city. They stayed outside a shop for a long time, and they seemed to have nothing to do. The owner of the shop felt they were unusual. So he used his n...
【简答题】When people meet each other for the first time in Britain, they say “How do you do?”and shake hands. Usually they do not shake hands when they just meet or say goodbye. But they shake hands after they...
【简答题】硅酸盐水泥又分为两种类型:____的称I型硅酸盐水泥,代号为P · I。掺加不超过水泥质量____的石灰石或粒化高炉矿渣混合材料的为II型硅酸盐水泥,代号为P · II。
【简答题】硅酸盐水泥又分为两种类型:____的称I型硅酸盐水泥,代号为P · I。掺加不超过水泥质量____的石灰石或粒化高炉矿渣混合材料的为II型硅酸盐水泥,代号为P · II。
【简答题】One day, two young men went to a small city. They stayed outside a shop for a long time, and they seemed to have nothing to do. The owner of the shop felt they were unusual. So he used his new mobile ...
【简答题】硅酸盐水泥中MgO含量不得超过( )。如果水泥经蒸压安定性试验合格,则允许放宽到( )。SO3的含量不超过( );硅酸盐水泥中的不溶物含量,I型硅酸盐水泥不超过( ),II型硅酸盐水泥不超过( )。
【简答题】II型硅酸盐水泥的代号:____,普通硅酸盐水泥的代号:____。
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