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【单选题】
对肾小管和集合管重吸收没有影响的激素有A.
肾上腺素
B.
心房钠尿肽
C.
醛固酮
D.
抗利尿激素
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举一反三
【单选题】Proper operation of the main engine reduction gear set requires the operation to monitor ________.
A.
the sump oil level
B.
oil flow sight glasses
C.
bearing temperatures
D.
all of the above
【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
【多选题】某企业的最低现金持有量为10000元,最高控制线为25000元,如果公司现有现金20000元,根据随机现金管理模型,下列说法正确的是( )
A.
现金回归线为17500元
B.
应该投资有价证券
C.
不应该投资有价证券
D.
现金回归线为15000元
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