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【判断题】
在结构尺寸及施工条件允许的情况下,选用较大粒径的粗骨料可以节约水泥。 ( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>A.
正确
B.
错误
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A.
完成
B.
未完成
【单选题】下列叙述正确的是 ( )
A.
在氧化还原反应中，肯定有一种元素被氧化，另一种元素被还原
B.
有单质参加或生成的反应一定属于氧化还原反应
C.
失电子难的原子，获得电子的能力一定强
D.
元素由化合态变成游离态时，它可能被氧化，也可能被还原
【简答题】根据中文提示填空。 1．He is a very _____________ (勇敢) young man. 2．It is ______________ (危险) to play football on the road. 3．The boy _______________ (倒) the water over a dog. The dog ran away. 4．He has a lot of...
【简答题】阅读理解。 George is a young man. He has a very big dog and a very small car. He likes playing volleyball. One day, after he plays volleyball for an hour at his club, he runs out and jumps into a car. His ...
【单选题】He is very old, _____________ he works like a young man. [ ]
A.
but
B.
and
C.
so
D.
or
【单选题】对拔罐注意事项描述错误的一项是
A.
拔罐时，室内须保持温暖，避开风口，防止受凉
B.
根据拔罐位置面积选择合适的罐具
C.
拔罐时，应用力叩击，以达到治疗效果
D.
拔罐后不可以立即洗澡
【简答题】There once was a very wealthy and successful man. He had more money than he could ever spend, and he was admired and looked up to by his community. __1___ He wasn’t happy. All his life he had been loo...
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