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【多选题】
罐头排气的目的()
A.
防止或减轻罐头在储藏过程中罐内壁的腐蚀
B.
防止或减轻罐头在高温杀菌时容器的变形和损坏
C.
有利于食品色、香、味和营养物质的保存
D.
防止厌氧菌的生长繁殖
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参考答案：
举一反三
【单选题】I got from him only a letter, which was pu t on my office desk; to the receipt of this letter I have never heard from him.
A.
subsequent
B.
remarkable
C.
solitary
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【判断题】三相异步电动机转子的旋转方向与磁场的旋转方向相反
A.
正确
B.
错误
查看完整题目与答案
【单选题】回答{TSE}题： A Letter from Alan I have learnt of a plan to build three hundred houses on the landcalled Parson's Place by the football grounD．Few people know about this newplan to increase the size of ou...
A.
To perersuade the government to build new houses.
B.
To protest about a new motorway near the town.
C.
To encourage more people in the town to use Parson's Place.
D.
To inform. other people about the builders' plans.
查看完整题目与答案
【单选题】D ear Sukie: I need your help! I can ’ t get a job. E verywhere I go, I get the same answer “ No ” . What should I do? Sad Sam You are reading a letter of asking for .
A.
a job
B.
advice
C.
a reply
查看完整题目与答案
【多选题】一批钢制拉杆，工作时不允许产生明显的塑性变形，最大工作应力σmax＝350MPa。今欲选用某钢制做该拉杆。现将该钢制成d0＝10mm的标准拉抻试样进行拉抻试验，测得Ps＝21500N,Pb＝35100N,试判断该钢是否满足使用要求？其选材依据计算值是多少？。A.能满足要求B.不能满足要求C.依据бs≈274MPaD.依据бb≈447MPaE.依据бs≈274MPa、бb≈447MPa同时判断
A.
A
B.
B
C.
C
D.
D
E.
E
查看完整题目与答案
【单选题】在画水平圆的正等测图时,选用哪两个轴测轴?( )
A.
X、Y轴
B.
X、Z轴
C.
Y、Z轴
D.
以上答案都不对
查看完整题目与答案
【单选题】I wrote a letter,___ I forgot to mail it
A.
an d
B.
bu t
C.
or
D.
while
查看完整题目与答案
【简答题】一批钢制拉杆,工作时不允许产生明显的塑性变形,最大工作应力 σ max = 350MPa 。现对一候选材料制成的 d 0 =10mm 的标准试样进行拉伸试验,测得 F s =21500 N , F b =35100 N ,则该钢 使用要求,因为 。
查看完整题目与答案
【简答题】根据要求改写句子。 1. She wrote a letter to her friend. (用Just 改为现在完成时) She _ just a letter to her friend. 2. Lucy likes reading books better than playing s .(改为同义句) Lucy _ reading books playing s . 3....
查看完整题目与答案
【单选题】在画水平圆的正等测图时,选用哪两个轴测轴
A.
X.、Y轴
B.
X.、Z轴
C.
Y.、Z轴
D.
其余选项均不正确
查看完整题目与答案
相关题目：
【单选题】I got from him only a letter, which was pu t on my office desk; to the receipt of this letter I have never heard from him.
A.
subsequent
B.
remarkable
C.
solitary
查看完整题目与答案
【判断题】三相异步电动机转子的旋转方向与磁场的旋转方向相反
A.
正确
B.
错误
查看完整题目与答案
【单选题】回答{TSE}题： A Letter from Alan I have learnt of a plan to build three hundred houses on the landcalled Parson's Place by the football grounD．Few people know about this newplan to increase the size of ou...
A.
To perersuade the government to build new houses.
B.
To protest about a new motorway near the town.
C.
To encourage more people in the town to use Parson's Place.
D.
To inform. other people about the builders' plans.
查看完整题目与答案
【单选题】D ear Sukie: I need your help! I can ’ t get a job. E verywhere I go, I get the same answer “ No ” . What should I do? Sad Sam You are reading a letter of asking for .
A.
a job
B.
advice
C.
a reply
查看完整题目与答案
【多选题】一批钢制拉杆，工作时不允许产生明显的塑性变形，最大工作应力σmax＝350MPa。今欲选用某钢制做该拉杆。现将该钢制成d0＝10mm的标准拉抻试样进行拉抻试验，测得Ps＝21500N,Pb＝35100N,试判断该钢是否满足使用要求？其选材依据计算值是多少？。A.能满足要求B.不能满足要求C.依据бs≈274MPaD.依据бb≈447MPaE.依据бs≈274MPa、бb≈447MPa同时判断
A.
A
B.
B
C.
C
D.
D
E.
E
查看完整题目与答案
【单选题】在画水平圆的正等测图时,选用哪两个轴测轴?( )
A.
X、Y轴
B.
X、Z轴
C.
Y、Z轴
D.
以上答案都不对
查看完整题目与答案
【单选题】I wrote a letter,___ I forgot to mail it
A.
an d
B.
bu t
C.
or
D.
while
查看完整题目与答案
【简答题】一批钢制拉杆,工作时不允许产生明显的塑性变形,最大工作应力 σ max = 350MPa 。现对一候选材料制成的 d 0 =10mm 的标准试样进行拉伸试验,测得 F s =21500 N , F b =35100 N ,则该钢 使用要求,因为 。
查看完整题目与答案
【简答题】根据要求改写句子。 1. She wrote a letter to her friend. (用Just 改为现在完成时) She _ just a letter to her friend. 2. Lucy likes reading books better than playing s .(改为同义句) Lucy _ reading books playing s . 3....
查看完整题目与答案
【单选题】在画水平圆的正等测图时,选用哪两个轴测轴
A.
X.、Y轴
B.
X.、Z轴
C.
Y.、Z轴
D.
其余选项均不正确
查看完整题目与答案
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