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【多选题】
多项选择题6:采用数字万用表检测电阻值时,有一定的步骤,下面表述正确的是:A.
第一步:根据色环读出电阻的标称值,并将数字万用表拨到电阻合适档位。
B.
第二步:将数字万用表的红笔和黑笔分别稳定接触电阻引脚两端。
C.
第三步:观看数字万用表显示屏上显示的该电阻值。
D.
第四步:可以根据色环颜色识读出该电阻的标称值,然后对比检测到的值,判断电阻值误差范围是否符合要求。
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【简答题】植物保护的工作方针是 , 。
【单选题】D Science can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce lonelines...
A.
What pets bring to their owners.
B.
How pets help people calm down.
C.
People's opinions of keeping pets.
D.
Pet's value in medical research.
【单选题】Which of the following can't be used to recommend others to keep pets?
A.
I advise you to keep pets
B.
Keeping pets is highly recommended
C.
If you like animals, I suggest you keep pets
D.
Raising pets is not allowed in my family
【简答题】布鲁纳的“发现法”具有两个效用：一是给心灵带来愉快，二是促使能力获得 。
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