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好发于下肢的是( )

A. 丹毒
B. 新生儿皮下坏疽
C. 疖
D. 痈
E. 脓性指头炎

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Because adult iguanas on Plazos Island are much smaller than adult iguanas of the same species on nearby islands, researchers assumed that environmental conditions on Plazos favor the survival of relatively smaller baby iguanas (hatchlings) in each yearly brood. They discovered instead that for each of the past three years, 10 percent of the smaller and 40 percent of the larger hatchlings survived, because larger hatchlings successfully evade their predators. Which of the following, if true about Plazos but not about nearby islands, contributes most to an explanation of the long-standing tendency of iguanas on Plazos to be smaller than those of the same age on nearby islands

A. Periodic wind shifts cause extended dry spells on Ptazos every year, putting the larger iguanas, whose bodies require relatively more water, at a great disadvantage.
B. There are exactly three species of iguanas on Plazos but only two species of seagulls that feed on iguanas, and a relatively small percentage of each year’s hatchlings are consumed by seagulls.
C. Wild cats, which were introduced as pets by early settlers and which were formerly major predators of Plazos iguanas, were recently killed off by a disease specific to cats.
D. The iguanas on Plazos are a relatively ancient part of the island’s animal life.
E. Both land and marine iguanas live on Plazos, and the land iguanas tend to be larger than marine iguanas of the same age.

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Between 1970 and 1980, energy consumption by United States industry peaked and then declined, so that by 1980 total industrial use of energy was below the 1970 level even though total industrial output had grown substantially in the same period. Industry must have instituted highly effective energy conservation measures in those years to have achieved such impressive results. Which of the following, if true, most seriously weakens the conclusion of the argument

A. Many industries switched to the greatest extent possible from high-priced oil to lower-priced alternatives throughout the 1970’s.
B. Total residential energy consumption was higher in the United States in 1980 than it had been in 1970.
C. Many industrial users of energy had paid little attention to energy conservation prior to 1970.
D. Industrial output grew less rapidly from 1970 to 1980 than it had from 1960 to 1970.
E. The industries whose production dropped sharply during the 1970’s included a disproportionately large number of energy-intensive industries.

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I’m pretty positive that if you had been more cautious, ______ (你本来是可以通过那场资格考试的).

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矿山安全技术粉尘分散度的测定分为（）分散度和质量分散度。

A. 数量
B. 显微
C. 粒径
D. 样品

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好发于下肢的是( )

A. 丹毒 B. 新生儿皮下坏疽 C. 疖 D. 痈 E. 脓性指头炎

I’m pretty positive that if you had been more cautious, ______ (你本来是可以通过那场资格考试的).

矿山安全技术 粉尘分散度的测定分为（）分散度和质量分散度。

A. 丹毒
B. 新生儿皮下坏疽
C. 疖
D. 痈
E. 脓性指头炎

矿山安全技术粉尘分散度的测定分为（）分散度和质量分散度。