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【单选题】
同一直线上的两个力F 1 和F 2 作用在同一物体上，已知F 1 =20N，F 2 =30N．它们的合力可能是：（）A.
大小为50N，方向与F 1 相反
B.
大小为50N，方向与F 2 相反
C.
大小为10N，方向与F 1 相同
D.
大小为10N，方向与F 2 相同
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举一反三
【单选题】关于磺胺类抗菌药的作用机制,下列说法错误的是( )
A.
关于磺胺类药物的作用机制有多种学说,其中以wood-fields学说为公认
B.
能增强细菌的抗药性
C.
磺胺类药物能与细菌生长所必需的对氨基苯甲酸(PABA)产生竞争性拮抗,干扰了细菌的酶系统对PABA的利用
D.
磺胺类药物所以能和PABA竞争性拮抗是由于分子大小和电荷分布极为相象的缘故
【单选题】A patient is admitted with liver disease. The patient is in the supine (flat) position and begins to eat their dinner. Eight hours later, the patient is dead. What may have happened to this patient...
A.
The patient developed aspiration pneumonia.
B.
The patient developed inhalation pneumonia.
C.
The patient developed hematogenous spread pneumonia.
D.
The patient developed bacterial pneumonia.
【单选题】As a nurse, you should be __________. [ ]
A.
patient with patients
B.
patients with patient
C.
patient of patients
D.
patients of patient
【简答题】磺胺类抗菌药物作用机制的研究对药物化学的发展有何贡献?
【单选题】Which patient would be appropriate to have a patient controlled analgesic (PCA).
A.
A confused patient.
B.
A patient after surgery for a cholecystecomy.
C.
A patient with bilateral weakness.
D.
A patient who cannot walk.
【简答题】A．Doctor and patient. B．Nurse and patient. C．Chemist and patient. D．Physician and patient.
【单选题】______, he had no intention of waiting for three good hours. A. Patient although he was B. As he was patient C. Patient as he was D. Since he was patient
A.
Patient although he was
B.
As he was patient
C.
Patient as he was
D.
Since he was patient
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