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单项选择题

物体做简谐振动，t=0时刻，，并沿正方向运动，则振动的初相为 A、0 B、 C、 D、……

物体做简谐振动，t=0时刻，，并沿正方向运动，则振动的初相为
A、0
B、
C、
D、

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单项选择题图中尺寸标注哪个是正确的？ A、左侧的两个视图 B、右侧的两个视图 C、都正确 D、都不正确

单项选择题One of your clinic patients is a 35-year-old man with AIDS on Medicare who is an active intravenous drug user. He uses heroin and cocaine, but he never shares needles and is reliably present at all his clinic visits. He admits that he is often unable to take his medicines regularly when he is using drugs. He is asking about antiretroviral therapy with protease inhibitors. You have just read that HIV viral resistance to protease inhibitors occurs rapidly when patients are unable to take their medicines reliably. Should you prescribe protease inhibitors to this patient?

A．No, because the problem of resistance is a real concern in a patient who cannot take his medicines reliably.
B．  No, because the patient is continuing to use heroin and
cocaine.
C．  Yes because the patient wants the protease inhibitors.
D．  Yes, because the doctor is under a duty not to abandon the
patient and to continue an ongoing therapeutic relationship
and encourage him with information and guidance about his
HIV disease and issues of addiction.