皮皮学，免费搜题
登录
搜题
【单选题】
旋进旋涡流量计的工作原理是()A.
节流原理
B.
动压原理
C.
涡流进动现象
D.
卡曼涡街现象
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】渡轮( ),出租车( ),美国( ),圣诞节( ),公寓( ),音乐会( )
【单选题】紫外/可见分光光度法定量分析通常选择物质的 （ ）处测定吸光度，然后用对照品或百分吸收系数求算出被测物质的含量，多用于制剂的含量测定。
A.
最小吸收波长
B.
最大吸收波长
C.
任一处波长
D.
不受波长限制
【简答题】Amy is an American student in Des Moines, Iowa. She is nine years old and she is in Grade Four this year. Now she and her friends are pen pals of the students in India. In their letters, Amy learns th...
【简答题】请用假名写出下列单词的发音: 1)半夜; 2)昨天晚上; 3)音乐会; 4)圣诞节; 5)暑假; 6)飞机; 7)出租车; 8)渡轮; 9)公寓; 10)游泳池; 11)朋友; 12)美国; 13)法国; 14)好像是; 15)笔直
【简答题】Des Moines国民银行.doc
【单选题】Which city had the lowest temperature?
A.
Des Moines.
B.
Flint.
C.
Fairbanks.
D.
Duluth.
【简答题】When I told my father that I was moving to Des Moines, Iowa, he told me about the only time he had been there. It was in the 1930s, when he was an editor if the literary magazine of Southern Methodist...
【单选题】Arlo is offered a job in Des Moines, where the CPI is 80, and a job in New York, where the CPI is 125. Arlo's job offer in Des Moines is for $42,000. How much does the New York job have to pay in orde...
A.
$42,000
B.
$65,625
C.
$68,880
D.
$189,000
【单选题】一个电阻,接在10V的直流电源上,产生的功率为P。把它改接在正弦交流电源上,使其产生的功率为P/2,则正弦交流电源电压的最大值为( )
A.
7.07V
B.
5V
C.
14V
D.
10V
相关题目：