已知普通混凝土的试配强度为38.2MPa，水泥实际抗压强度为48MPa。粗骨料为碎石 (A＝O.46，B＝0.07)，则其水灰比应为()。
A. 0.44
B. O.56
C. 1.8
D. 0.58
查看答案
A．competitiveB．rewardingC．routineD．formidable
A. competitive
B. rewarding
C. routine
D. formidable
The "formulas "mentioned in paragraph 3 of the passage most probably refers to ______.
A. movie theaters
B. use of real characters
C. contemporary events
D. standardized film techniques
He was afraid the others might think he was showing______or being superior.
A. in
B. up
C. out
D. off
What does a man do when he cannot get exactly what he wants？
A. He buys a similar thing of the color he wants.
B. He usually does not buy anything.
C. At least two of his requirements must be met before he buys.
D. So long as the style. is right, he buys the thing.
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