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Broca区受损易导致

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肠阿米巴病常见的发病部位是

右下叶背段肺脓肿患者,气管内给药时采取

A shortcoming of protective labor laws that singling out a particular group of workers for

A. such laws are often too weak to be effective at protecting the group in question.
B. employer's compliance with such laws results in increased tension among workers.
C. such laws exert no pressure on employers to eliminate hazards in the workplace.
D. compliance with such laws is often costly for employers.

According to the passage, the NIS program

A. is always free, so are the virus updates.
B. is free, but the virus updates cost $19.95.
C. costs $19.95 including the virus updates.
D. costs $19.95 excluding the virus updates.

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