问题
单项选择题
（）不属于注入水推荐水质辅助控制标准要求。
A.二氧化碳含量
B.溶解氧含量
C.点蚀率
D.pH值
答案
参考答案：C
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（）不属于注入水推荐水质辅助控制标准要求。
A.二氧化碳含量
B.溶解氧含量
C.点蚀率
D.pH值
参考答案：C
One morning Raman, a true master of the art of archery (箭术), invited his favorite student to watch a display of his skill. The student had 36 this more than a hundred times before, but he still obeyed his 37. Together, they went into a nearby wood and reached a tall 38. Raman picked a rose flower and 39 it on one of the branches of the tree. He 40 opened his bag and took out three objects: his 41, an arrow and a white handkerchief. Raman stood one hundred paces from the spot where he had placed the 42. Facing his target, he 43 his student to blindfold (蒙住眼睛) him with the handkerchief. The student did as his teacher 44. “How often have you seen me practice the sport of archery?” Raman asked him 45. “Every day,” replied his student. “And you have 46 managed to hit the rose from three hundred paces away.” With his eyes covered by the 47, Raman placed his feet firmly on the ground and 48 the bowstring (弓弦) with all his strength. Aiming at the rose on the 49, he let the arrow fly. The arrow whistled through the air, 50 it did not even hit the tree, missing the target by a few meters. “Did I 51 it?” said Raman, removing the handkerchief from his eyes. “No, you missed 52,” replied the student. “I thought you were going to 53 me the power of thought and your ability to perform magic.” “I have 54 taught you the most important lesson about the power of thought.” replied Raman. “When you 55 something, concentrate only on that: No one will ever hit a target they cannot see.”
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