题目内容

轴套类零件有径向尺寸和轴向尺寸。径向尺寸的设计基准为（）。

A. 左端面
B. 右端面
C. 轴线
D. 轴肩

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盘盖类零件有径向尺寸和轴向尺寸。轴向尺寸的设计基准为（）。

A. 经过加工并与其他零件相接触的较大端面
B. 轴线
C. 键槽底面
D. 盘盖外缘

Under federal law, foods and vegetables can be 1. __ organic if they grow without conventional pesticides or petroleum-based fertilizers (有机肥料). As a result, organic foods contain fewer 2. _ residues. But it is unclear whether this really makes the food more healthful since pesticide levels in regular produces have not been 3. to pose a healthy 4. _ to humans.Another claim is that organic produce is more nutritious than the conventional kind. The 5. ___ for this is mixed with most studies finding no advantage for organic. Then there is a 6. _ that organic produce is less likely to be 7. _ by bacteria like E. coli (大肠(杆)菌). In this case, the answer is clear — not true.What about meat and dairy products labeled organic? This means they came from animals that were not given growth hormones or anti-biotics. Though some researchers suggest that hormones in food could be 8. to certain cancers and early puberty(青春期), it is a matter of scientific 9. . There's greater agreement that anti-biotics in the food supply may help spawn so-called “superbugs”(超级病菌) and 10. _ us in a resistance treatment.

Dosage and AdministrationThe interval between doses of Stavudine capsule should be 12 hours. Stavudine capsule may be taken without regard to meals.Adults: The recommended dose based on body weight is as follows:40mg twice daily for patients ≥60kg30mg twice daily for patients<60kgPediatrics:30mg twice daily for patients≥30kg1mg twice daily for patients<30kg请翻译以下句子或短语1、Dosage and Administration2、The interval between doses of Stavudine capsule should be 12 hours.3、Stavudine capsule may be taken without regard to meals.4、Adults: The recommended dose based on body weight is as follows:5、40mg twice daily for patients ≥60kg6、30mg twice daily for patients<60kg7、Pediatrics:8、30mg twice daily for patients≥30kg9、1mg twice daily for patients<30kg

简述安全阀理论的内容。