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【多选题】
建立数学模型常用的物理原理包括()
A.
质量守恒原理
B.
能量守恒原理
C.
达西定律
D.
非达西定律
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【简答题】S7-200系列PLC的存储单元有 、 、 和 四种编址方式。
【单选题】国内常用氧气瓶的充装压力为15MPa,容积为( )L。在15MPa的压力下,可贮存6m3氧气。
A.
40
B.
30
C.
50
D.
60
【单选题】患草鱼出血病的鱼在( )体色开始变暗,离群独游。
A.
.潜伏期
B.
前驱期
C.
后驱期
D.
充分发展期
【单选题】Mother ______________ (fall) asleep when I came back last night.
A.
had fallen
B.
falls
C.
has falled
D.
falled
【单选题】Mother was proud that her daughter looked ________ among the girls in the party that evening.
A.
less beautiful
B.
the most beautiful
C.
more beautiful
D.
evenbeautiful
【单选题】If the reimbursement instruction written on the payment order is expressed as ‘in cover, please debit our A/C with you’, the A/C relationship between the remitting bank and the paying bank must be ( ...
A.
the paying bank maintains an A/C with remitting bank
B.
the remitting bank maintains an A/C with paying bank
C.
both remitting bank and paying bank maintain their A/Cs with a third bank
D.
remitting bank and paying bank have their A/Cs with two different bank
【单选题】Mother didn't tell me ______
A.
A if you will see me off at the station
B.
whether you will see me off at the station
C.
C if you would see me off at the station
D.
that you will see me off at the station
【单选题】Tommy:Mommy,when will we have dinner?I‘m starvin9. Mother:__________.We have to wait for Daddy.
A.
Soon,honey
B.
Quickly,honey
C.
OK,honey
D.
All right,honey
【判断题】通常氧气瓶容积为40L,在15MPa的压力下,可贮存6m3的氧气。( )
A.
正确
B.
错误
【简答题】S7-200系列PLC的存储单元有 、 、 、 四种编址方式。
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