当H和F沿z轴结合成HF分子时,F 原子中和 H 的1s轨道对称性相同的轨道有_______________,其中因能量不匹配而不能和 1s组成有效分子轨道有______________。
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【单选题】A new floppy drive was just installed into a PC. The drive powers on at system boot but the status LED does not turn off during operation. Which of the following is MOST likely the issue?()
A.
The power cable was installed incorrectly and needs to be flipped.
B.
The floppy drive was not enabled within the motherboard’s BIOS.
C.
The FDD cable was installed incorrectly and needs to be flipped.
D.
A Molex power cable was used instead of a Berg cable.
【单选题】A 43-year-old man with a distant history of intravenous drug use is now status post a right inguinal hernia repair and is complaining of severe groin pain on the side of the operation. All of the foll...
A.
Evaluate the patient for necrotizing fasciitis
B.
Reassure the patient that his use of preoperative suboxone that morning may have blocked his postoperative response to narcotics
C.
Allow the nurse to administer a postoperative parenteral nonopioid analgesic
D.
Discharge the patient with a prescription for pain medication and a plan for follow-up in 2 weeks