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【多选题】
关于手杖的描述,下列描述正确的是()
A.
手杖分为单足手杖和多足手杖。单足手杖又可分为直立手杖、减力手杖,多足手杖又可分为四足手杖、三足手杖
B.
直立手杖对使用者的手(尤其是腕关节)有一定的力量要求。长期使用直立手杖,使用者会感觉手腕不适,甚至出现腕管综合症等
C.
减少手杖上部的“7”字形结构,可以大大减轻着地点触地时的上传力量,从而减少对上肢的慢性损伤,包括减少腕管综合症的发生等
D.
四足手杖在走路时不要太靠近患者,以免行进过程中手杖与身体发生碰撞
E.
也不要离得太远,以免手杖着地负向时倾倒。四足手杖的支撑面大,稳定性好,但占地面积大,不太适合用于上下楼梯或高低不平处。、
F.
三足手杖的基座被三角形的硬质橡胶板块所替代,坚固四足拐杖的良好移动性和单足拐杖的良好稳定性
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【单选题】中外合资经营企业的合营期限,一般项目原则上为( )
A.
10-30年
B.
20-30年
C.
20-50年
D.
30-50年
【单选题】Only when the war was over ____ return to his hometowns.
A.
have the soldiers    
B.
the soldiers     
C.
the soldiers did    
D.
did the soldiers
【单选题】中外合资经营企业的合营期限,根据不同行业和项目的具体情况,由合营各方协商解决。一般项目的合营期限原则上为(    )。
A.
5~10年    
B.
10~20年
C.
10~30年    
D.
15~30年
【单选题】西周时,周文王根据哪一部古书创制了《易经》。
A.
《论语》
B.
《孟子》
C.
《道德经》
D.
《河图洛书》
【单选题】It is not surprising that former soldiers have difficulty in ___________ civilian life.
A.
sticking to
B.
relating to
C.
adjusting to
D.
connecting to
【单选题】Small arms _______ often carried by the soldiers.
A.
are
B.
has
C.
was
D.
have
【单选题】If you __________ Johnny Moder until recently, you'd think the photograph on the wall was strange.( )
A.
shouldn't contact
B.
didn't contact
C.
weren't to contact
D.
hadn't contacted
【单选题】What upset the child most was _________to play games on the computer before he finished his task.
A.
his not to be allowed
B.
him being not allowed
C.
his not being allowed
D.
him to be not allowed
【简答题】With his friends _______(give) help, he finished the task in advance.
【单选题】He is the only one of the students who__________finished the task in time.
A.
is
B.
are
C.
have
D.
has
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