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【判断题】
志贺氏菌能发酵葡萄糖产酸产气，也能分解蔗糖、水杨素和乳糖。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】________: To set in place and prepare for operation.
【单选题】下列关于票据贴现金额说法正确的是
A.
票据贴现金额=票据（无息票据）面值-贴现利息
B.
贴现金额就是票据面值
C.
贴现天数就是票据期限
D.
贴现天数=企业已经持有的期限－票据期限
【单选题】Set operation of relation S and relation R. The result includes both tuples in S and tuples in R. This set operation is called ( ).
A.
union operation
B.
intersection operation
C.
difference operation
D.
product operation
【简答题】用EDTA滴定液测定氢氧化铝（ ）。
【单选题】According to the writer, we communicate with animals in an attempt to______.
A.
set up a relationship with them
B.
make them do what we want
C.
get along well with them
D.
teach them a language
【单选题】Operation of the valve control release on a fixed CO2 system must immediately ______.
A.
release CO2 to the protected space
B.
secure all mechanical ventilation in the protected space
C.
sound the rig’s general alarm signal for a fire
D.
sound an alarm in the ballast control room
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