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【单选题】
在装有左和右两个燃油箱并用一个油泵供油的单发飞机上,油箱向发动机供油的方法是
A.
只有一个选择活门，打开后两个油箱通过公共管道同时向外供油
B.
只有一个选择活门，并且不能使两个油箱同时向发动机供油
C.
两个油箱分别有自己的燃油泵和共用一个选择活门共同供油
D.
两个选择活门和一个交输活门，工作由驾驶员根据供油需要打开和。
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参考答案：
举一反三
【单选题】My mother often dumplings for me on weekends.
A.
plays               
B.
does            
C.
makes
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【判断题】侧规的组成部件主要有传动装置、定位部件和调节机构。 ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】My mother often _____ me ____ housework on Sunday.
A.
make… do   
B.
makes …does  
C.
makes …do
查看完整题目与答案
【单选题】What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art or mathematics during pregnancy seem utterly impossible. ...
A.
Some mothers try to influence their unborn children by studying art and other subjects during their pregnancy.
B.
It is utterly impossible for us to learn anything about prenatal development.
C.
The blood vessels of mother and child do not join directly.
D.
There is no connection between mother's nervous systems and her unborn child's.
查看完整题目与答案
【单选题】John, a friend of mine, _____ got married only last week, spent ＄3000 more than he _____. [     ]
A.
whom; will plan
B.
who; has planned
C.
whom; would plan
D.
who; had planned
查看完整题目与答案
【单选题】My mother can________cakes. [     ]
A.
making
B.
make
C.
makes
查看完整题目与答案
【多选题】侧规的组成部件主要有 ( )
A.
传动装置
B.
定位部件
C.
调节机构
D.
减速机构
查看完整题目与答案
【单选题】What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art or mathematics during pregnancy seem utterly impossible. ...
A.
Some mothers try to influence their unborn children studying art and other subjects during their pregnancy
B.
It is utterly impossible for us to learn anything in prenatal development
C.
The blood vessels of mother and child do not join directly
D.
There are no connection between mother's nervous system and her unborn child's
查看完整题目与答案
【单选题】Look！My mother _____ cakes. She often _______ cakes for us. [     ]
A.
makes, makes
B.
making , make
C.
is making, makes
D.
is making , is making
查看完整题目与答案
【单选题】What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art, or mathematics during pregnancy seem utterly impossible....
A.
Some mothers try to influence their unborn children by studying art and other subjects during their pregnancy.
B.
It is utterly impossible for us to learn anything about prenatal development.
C.
The blood vessels of mother and child do not join directly.
D.
There are no connection between a mother's nervous systems and her unborn child's.
查看完整题目与答案
相关题目：
【单选题】My mother often dumplings for me on weekends.
A.
plays               
B.
does            
C.
makes
查看完整题目与答案
【判断题】侧规的组成部件主要有传动装置、定位部件和调节机构。 ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】My mother often _____ me ____ housework on Sunday.
A.
make… do   
B.
makes …does  
C.
makes …do
查看完整题目与答案
【单选题】What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art or mathematics during pregnancy seem utterly impossible. ...
A.
Some mothers try to influence their unborn children by studying art and other subjects during their pregnancy.
B.
It is utterly impossible for us to learn anything about prenatal development.
C.
The blood vessels of mother and child do not join directly.
D.
There is no connection between mother's nervous systems and her unborn child's.
查看完整题目与答案
【单选题】John, a friend of mine, _____ got married only last week, spent ＄3000 more than he _____. [     ]
A.
whom; will plan
B.
who; has planned
C.
whom; would plan
D.
who; had planned
查看完整题目与答案
【单选题】My mother can________cakes. [     ]
A.
making
B.
make
C.
makes
查看完整题目与答案
【多选题】侧规的组成部件主要有 ( )
A.
传动装置
B.
定位部件
C.
调节机构
D.
减速机构
查看完整题目与答案
【单选题】What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art or mathematics during pregnancy seem utterly impossible. ...
A.
Some mothers try to influence their unborn children studying art and other subjects during their pregnancy
B.
It is utterly impossible for us to learn anything in prenatal development
C.
The blood vessels of mother and child do not join directly
D.
There are no connection between mother's nervous system and her unborn child's
查看完整题目与答案
【单选题】Look！My mother _____ cakes. She often _______ cakes for us. [     ]
A.
makes, makes
B.
making , make
C.
is making, makes
D.
is making , is making
查看完整题目与答案
【单选题】What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art, or mathematics during pregnancy seem utterly impossible....
A.
Some mothers try to influence their unborn children by studying art and other subjects during their pregnancy.
B.
It is utterly impossible for us to learn anything about prenatal development.
C.
The blood vessels of mother and child do not join directly.
D.
There are no connection between a mother's nervous systems and her unborn child's.
查看完整题目与答案
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