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【单选题】
The ladder shall ______．A.
be secured in a position so that it rests firmly against the ship's side from which the discharge operations are carried out
B.
have at least two replacement steps which are secured in position by a method different from that used in the original construction
C.
have battens made of hardwood，or other material of equivalent properties，in one piece and not less than
D.
have steps made of softwood，or other material of equivalent properties，made in one piece free of knots，having an efficient slip surface
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【单选题】下列有关肠梗阻的描述哪项是不正确的?
A.
高位小肠梗阻的呕吐发生早而频繁，腹胀明显
B.
低位小肠梗阻腹胀明显，呕吐出现晚而次数少，并可吐出粪样物
C.
结肠梗阻以腹胀为主要症状
D.
不完全性肠梗阻呕吐与腹胀均较轻
【单选题】有关肠梗阻，下列哪项是不正确的?
A.
高位小肠梗阻的呕吐发生早而频繁，腹胀明显
B.
低位小肠梗阻腹胀明显，呕吐出现晚而次数少，并可吐出粪样物
C.
结肠梗阻以腹胀为主要症状
D.
不完全性肠梗阻呕吐与腹胀均较轻
【单选题】不可抗力事件是指
A.
当事人不能预见、无法避免和控制的事件
B.
当事人不能预见和避免，不能克服的事件
C.
当事人不能预见和避免，但能克服的事件
D.
当事人可以预见但是不能避免的事件
【单选题】要告知对方自己没有对方想要的货物,下面哪个句子在语气方面把握较好?
A.
I'm sorry that we do not have cotton sweaters larger than size 15.
B.
In reply to your inquiry of May 22, we regret to tell you that our cotton sweaters do not come in any size larger than 15.
C.
In your letter written on May 22 you enquired about cotton sweaters , but our cotton sweaters do not come in any size larger than 15.
D.
In reply to your inquiry of May 22, I think you can understand that our cotton sweaters do not come in any size larger than 15.
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