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搜题
【单选题】
尿毒症患者出现的口臭是由于:( )
A.
酮体增多,丙酮排出
B.
过度呼吸,呼出CO2
C.
细菌在咽部繁殖
D.
尿素分解产生的氨味
E.
以上都是
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【判断题】电子帐册管理企业只能设立一个电子帐册。
A.
正确
B.
错误
【多选题】港段铁路杂费与劳务费包括( )。( )
A.
终点站费
B.
装卸费
C.
国际集装箱加固费和吊箱费
D.
港段调车费、港段劳务费
【单选题】海关征收关税的领域叫()
A.
关境
B.
国境
C.
自由贸易区
D.
出口加工区
【单选题】He doesn’t know _________ English because he has studied it for only _________ weeks.
A.
much, a few
B.
little, few
C.
few, a little
D.
a few, a little
【判断题】由于氧化沟工艺污泥龄较长,所以该工艺产生的剩余污泥有机物含量偏高.
A.
正确
B.
错误
【单选题】Though he has studied at English for ten months, he can still _ speak the language. [     ]
A.
hardly; hard
B.
hard; hardly
C.
hard; hard
【单选题】--Has he passed the exam yet?  ---No,He ___ it if he had studied harder.
A.
would pass
B.
passed
C.
should has passed
D.
would have passed
【判断题】海关征收关税的领域称为关境。
A.
正确
B.
错误
【单选题】Robert is away. He _______ America since last week.
A.
has been to
B.
has joined a club in
C.
has studied in
D.
has become a manager in
【单选题】下面关于符号对象说法错误的是()
A.
符号对象可以进行“大于”、“大于等于”、“小于”、“小于等于”的运算
B.
sym命令是建立一个符号对象
C.
syms命令可以创建多个符号对象
D.
符号对象只有“相等”和“不相等”的运算
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