问题
单项选择题
泵空载时，qv=0，对应的（）。
A、轴功率P=0
B、有效功率Pe=0
C、容积损失功率ΔPv=0
D、机械损失功率ΔPm=0
答案
参考答案：B
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泵空载时，qv=0，对应的（）。
A、轴功率P=0
B、有效功率Pe=0
C、容积损失功率ΔPv=0
D、机械损失功率ΔPm=0
参考答案：B
每个案例有多个提问，每个提问有 5～12个备选答案，其中正确答案有1个或者多个。
| 患者，男65岁，高血压10年，急起气促、端坐呼吸，躁动不安，双肺满布湿性啰音。BP 220/ 130mmHg。 |
治疗的血压目标是
A．24h血压降低50%
B．24h血压降低10%
C．24h血压降至120/80mmHg
D．24h血压降至140/90mmHg
E．24h血压降低25%24h血压降低40%
Once upon a time, there lived many doves in the jungle. One day they went out in search of food. They flew long distances 41 did not get anything to eat. All of them were now completely 42. A young dove asked the King Dove, “Your Majesty, please 43 us to take some rest.” The king replied, “Be 44 , my dear young fellow. We shall 45 get something to eat very soon.” The young dove started flapping his wings with 46 and soon left everyone else behind. After some time, he 47 and spoke to others, “Hey, I see lots of 48 down there.” Hearing this, all the doves started 49 the scattered grains under a banyan tree. 50 the King Dove said, “It is too good to be true. There is something wrong. Don’t rush towards the grains. It may be a 51 .Some hunter must have laid a trap.” But the doves were extremely hungry. The 52 of the grains was too tempting (诱惑人的). Without giving a(n) 53 to the king’s advice, they swooped down and started eating the grains. After having a big 54 , they tried to fly away only to 55 that they were caught in a net. The King Dove said, “I told you before that it is a trick of some hunter.” All of them felt ashamed and 56 . One of them said to the King Dove, “Oh, Your Majesty, please save us.” So the King Dove said, “All of you must try to fly with the 57 at the same time and in the same 58, all of you.” Just then they saw a(n) 59 show up. The King Dove said, “Now all of you, fly together.” So all the doves flapped their wings together and flew with the net. The hunter stood dazed. He couldn’t 60 what he had just seen.
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