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【单选题】
序号3代表的部位名称是( )A.
喉咽
B.
食管
C.
梨状隐窝
D.
声门下腔
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反馈参考答案：
举一反三
【单选题】等摩尔的二元醇和二元酸缩聚,另加二元酸的1.5% mol 醋酸,则两种基团数比或摩尔比r=( )
A.
0.9852
B.
0.9709
C.
0.9926
D.
0.9868
【单选题】Mr. Green , when did you start to work a teacher in this school? [ ]
A.
for
B.
as
C.
on
D.
out
【单选题】In typical induction motors, the stator winding is connected to the source and the rotor winding is short-circuited for many applications, or may be closed through external resistances. Herein, we can...
A.
armature winding and field winding
B.
field winding and armature winding
C.
motor
D.
stationary
【简答题】A.going B.coming C.1eading D.winding
【简答题】等摩尔二元醇和二元酸缩聚,另加醋酸1.5%,p=0.995或0.999时聚酯的聚合度多少?
【单选题】In typical induction motors, the stator winding is connected to the source and the rotor winding is short-circuited for many applications, or may be closed through external resistances. Herein, we can...
A.
field winding and armature winding
B.
armature winding and field winding
C.
armature winding
D.
field winding
【单选题】幼儿园的双重任务是指幼儿园对幼儿实施保育和教育以及（ ）。
A.
为家长工作、学习提供便利条件
B.
为幼儿健康成长提供条件
C.
为小学教育提供基础
D.
对幼儿进行照看
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