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【单选题】
空间中直线与平面的位置关系有且只有(  )
A.
直线在平面内
B.
直线与平面相交
C.
直线与平面平行
D.
直线在平面内或直线与平面相交或直线与平面平行
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皮皮学刷刷变学霸
举一反三
【单选题】解语老猿开晓户,( )。
A.
学飞雏鹤落高松
B.
隔水悠扬午夜钟
C.
轻于粉蝶瘦于蜂
D.
露似真珠月似弓
【单选题】下列铁碳合金中,焊接性最好的是( )。
A.
低碳钢
B.
可锻铸铁
C.
高碳钢
D.
灰口铸铁
【多选题】The Dinner Party The American does not join in the 1 but watches the other guests. As he looks, he sees a strange expression ___2____ the face of the ___3____. She is staring ___4____ahead, her __...
A.
hostess
B.
come over
C.
straight
D.
whispers
E.
none
F.
hotness
G.
comes to
H.
argument
I.
effective
J.
quickly K. bait L. must be M. motions N. widen O. shortly P. muscles Q. comes over R. motion S. place T. slightly
【单选题】This dinner looks _____ to me, and I like it. [     ]
A.
terrible
B.
good
C.
badly
D.
nicely
【单选题】滚动轴承按可承受载荷方向分类时,圆柱滚子轴承属于 ____________ 轴承。
A.
向心
B.
推力
C.
向心推力
D.
推力向心
【单选题】显示用户主目录下所有的目录和文件使用下面哪个命令?(假设您的当前目录是根目录)
A.
ls
B.
ls ~
C.
ls -la
D.
ls -a ~
【单选题】考虑到大气中有水蒸气,大气的饱和绝热递减率的大小要比干绝热递减率的大小( )。
A.
B.
C.
要看水蒸气浓度变化率的大小
【单选题】---Let's go out for dinner this evening. ---It _______ great
A.
hears
B.
listens
C.
looks
D.
sounds
【单选题】Woman: Dont you think this candle light dinner is very romantic? Man: Sure, at least I dont have to look at the food. Question: What does the man think of the food?
A.
It is indeed quite romantic!
B.
It doesn't look very delicious.
C.
It looks tasty and smells good.
D.
It's a pity he can't see clearly what he's eating.
【判断题】维生素E可有效对抗自由基,抑制过氧化脂质生成,祛除黄褐斑。
A.
正确
B.
错误
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