皮皮学，免费搜题
登录
搜题
【多选题】
、铸造应力过大将导致铸件产生变形或裂纹。消除铸件中残余应力的方法是( );消除铸件中机械应力的方法是( )。
A.
采用同时凝固原则
B.
提高型、芯砂的退让性
C.
及时落砂
D.
去应力退火
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
【单选题】以下协议哪个不是URL可以指定的协议类型 ?
A.
http
B.
SMTP
C.
ftp
D.
https
查看完整题目与答案
【单选题】氩弧焊采用直流反接时，（）。
A.
焊件金属受电子高速冲击熔化慢
B.
钨极受电子高速冲击，造成钨极温度高，损耗快。
C.
没有阴极破碎作用
查看完整题目与答案
【简答题】关于女性内生殖器,下述哪项不对
查看完整题目与答案
【简答题】The dog plays outside. The dog is friendly.
查看完整题目与答案
【单选题】铝、镁及其合金采用直流钨极氩弧焊时,不应该将钨极接在电源的正极上,其原因是()。
A.
避免钨极损耗过大
B.
容易产生气孔
C.
工件表面没有“阴极破碎”作用
D.
飞溅大
查看完整题目与答案
【单选题】Why does the text imply that there are so many neighborhoods with houses that look similar?
A.
Buyers prefer them.
B.
They are cheaper to produce.
C.
A slow real estate market.
D.
Local building codes.
查看完整题目与答案
【单选题】关于女性内生殖器,下述哪项不对
A.
输卵管长8~14cm
B.
子宫壁分为三层
C.
子宮腔冠状断面呈倒置三角形
D.
阴道黏膜有许多纵行皱襞
E.
输卵管分为四个部分
查看完整题目与答案
【单选题】Why does the author compare smoking with obesity in this text?
A.
They are both problems difficult to settle.
B.
They can lead to the same diseases.
C.
They are both bad habits.
D.
They are both harmful to health.
查看完整题目与答案
【简答题】Give an IUPAC substitutive name for each of the following alcohols:
查看完整题目与答案
【单选题】The best time for a training session to begin is when the dog is somewhat hungry because the trainer can use food to tempt the dog to follow his command.
A.
Y
B.
N
C.
NG
查看完整题目与答案
相关题目：
【单选题】以下协议哪个不是URL可以指定的协议类型 ?
A.
http
B.
SMTP
C.
ftp
D.
https
查看完整题目与答案
【单选题】氩弧焊采用直流反接时，（）。
A.
焊件金属受电子高速冲击熔化慢
B.
钨极受电子高速冲击，造成钨极温度高，损耗快。
C.
没有阴极破碎作用
查看完整题目与答案
【简答题】关于女性内生殖器,下述哪项不对
查看完整题目与答案
【简答题】The dog plays outside. The dog is friendly.
查看完整题目与答案
【单选题】铝、镁及其合金采用直流钨极氩弧焊时,不应该将钨极接在电源的正极上,其原因是()。
A.
避免钨极损耗过大
B.
容易产生气孔
C.
工件表面没有“阴极破碎”作用
D.
飞溅大
查看完整题目与答案
【单选题】Why does the text imply that there are so many neighborhoods with houses that look similar?
A.
Buyers prefer them.
B.
They are cheaper to produce.
C.
A slow real estate market.
D.
Local building codes.
查看完整题目与答案
【单选题】关于女性内生殖器,下述哪项不对
A.
输卵管长8~14cm
B.
子宫壁分为三层
C.
子宮腔冠状断面呈倒置三角形
D.
阴道黏膜有许多纵行皱襞
E.
输卵管分为四个部分
查看完整题目与答案
【单选题】Why does the author compare smoking with obesity in this text?
A.
They are both problems difficult to settle.
B.
They can lead to the same diseases.
C.
They are both bad habits.
D.
They are both harmful to health.
查看完整题目与答案
【简答题】Give an IUPAC substitutive name for each of the following alcohols:
查看完整题目与答案
【单选题】The best time for a training session to begin is when the dog is somewhat hungry because the trainer can use food to tempt the dog to follow his command.
A.
Y
B.
N
C.
NG
查看完整题目与答案