大一高数分部积分法求解

According to the news, which statement is CORRECT？

A．Americans also use pumpkins for cooking during the holiday of Thanksgiving.

B．Americans have grown pumpkins in south America for hundreds of years.

C．Pumpkins will grow even if the female flower is not pollinated at the right time.

D．People only use pumpkins in pies, bread and cakes.

请帮忙给出正确答案和分析，谢谢！

烟叶烘烤与烟叶等级质量的关系()导致烟叶光泽灰暗。

A.定色期期湿球温度过低或不稳定;

B.干筋期湿球温度过低;

C.定色前温度过高,排湿不畅;

D.筋期干球温度和湿球温度过高;

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！

一级预防包括

A.有效降低生产环境中职业性有害因素水平

B.通过健康检查，早期发现工人的健康损害

C.对职业病患者及时进行治疗和处理

D.建立和健全组织领导机构

E.引进先进的生产工艺和设备

请帮忙给出正确答案和分析，谢谢！

《化妆品卫生规范》中要求不得检出的致病微生物是

A、大肠菌群

B、蜡样芽孢杆菌

C、克雷伯杆菌

D、金黄色葡萄球菌

E、葡萄球菌

请帮忙给出正确答案和分析，谢谢！

People strike the animals in the eardrum to______.

A．make them become deaf

B．make them feel the pain

C．knock them out

D．make them unconscious

请帮忙给出正确答案和分析，谢谢！