皮皮学，免费搜题
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【多选题】
手工钨极氩弧焊机由 等部分所组成。A.
焊接电源
B.
焊炬
C.
供气及供水系统
D.
焊接控制系统
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皮皮学刷刷变学霸
举一反三
【单选题】________ your major, you'll have to take general education classes in your first two years of college. [ ]
A.
In spite
B.
No matter
C.
Regardless of
D.
With regard to
【单选题】免疫是一种生理功能,人体依靠这种功能识别“自己”和“非己”成分,从而破坏和排斥进入人体内的抗原物质,或人体所产生的损伤细胞和肿瘤细胞等,以维持人体的健康。关于人体免疫,以下说法正确的是( )
A.
人体的皮肤能阻挡病原体的侵入属于特异性免疫
B.
抗原是能引起人体免疫器官和免疫细胞产生抗体的物质
C.
人的肝脏里面没有吞噬细胞
D.
一种抗体能消灭多种抗原
【单选题】Take a taxi,___________ you'll miss your train.
A.
in
B.
during
C.
throughout
D.
within
【简答题】I ’ ll try not to take up too much of your time.英译汉
【单选题】--Will you take these to your room and ______ them safe?--I'll come and take them soon.
A.
set
B.
consider
C.
keep
D.
get
【单选题】Grandpa: Robbie, we'll go fishing soon, and we'll take your dad with us. Grandson: I'm ready, Grandpa. ______
A.
You name the day
B.
Enjoy yourselves
C.
You can't miss it
D.
Take your time
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