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【单选题】
碘口服溶液中加碘化钾的作用是:A.
抗氧作用
B.
增溶作用
C.
补钾作用
D.
作用
E.
助溶作用
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举一反三
【单选题】企业产品生产的资源消耗与可获利润如下表产品甲乙资源限量设备台时1台时/件1台时/件300台时原料 A2千克/件1千克/件400千克原料B01千克/件250千克预计获利（元/件）50100该问题的线性规划数学模型中，决策变量有（）个
A.
2
B.
4
C.
6
D.
3
【单选题】I have ever worked on three ships with UMS.我在三条无人机舱的船上做过。 ▷78
A.
I have ever worked on three ships.
B.
I have ever worked on five ships with UMS
C.
I have ever worked on four ships.
D.
Three ships that I have ever worked are UMS.(Unattended Machinery Space)
【单选题】企业产品生产的资源消耗与可获利润如下表 产品 甲 乙 资源限量 设备台时 1 台时 / 件 1 台时 / 件 300 台时 原料 A 2 千克 / 件 1 千克 / 件 400 千克 原料 B 0 1 千克 / 件 250 千克 预计获利(元 / 件) 50 100 该问题的线性规划数学模型中,决策变量的数量为:
A.
二
B.
四
C.
六
D.
三
【单选题】Nowhere else ________ such a wonderful sight as here.
A.
I have ever seen
B.
have I ever seen
C.
I ever saw
D.
did I ever see
【单选题】I ______ the company when I was 25 and have worked there ever since.
A.
joined
B.
applied for
【单选题】S1: Have you ever worked on oil tankers? S2: Not yet. I have worked on container ships for a long time. Q: Which of the statements is true?
A.
I have ever worked on oil tankers.
B.
I have ever worked on container ships.
C.
I have ever worked on bulk carriers.
D.
I have ever worked on general cargo ships.
【单选题】企业产品生产的资源消耗与可获利润如下表。 产品 甲 乙 资源限量 设备台时 1 台时 / 件 1 台时 / 件 300 台时 原料 A 2 千克 / 件 1 千克 / 件 400 千克 原料 B 0 1 千克 / 件 250 千克 预计获利(元 / 件) 50 100 获得最大利润时的问题的线性规划数学模型中,决策变量有()个:
A.
2
B.
4
C.
6
D.
3
【单选题】— Have you ever worked with a tape recorder? — I ________ it a lot when I was studying French in school.
A.
used
B.
was used
C.
have used
D.
had used
【单选题】I have ever worked on a ship whose age is 24 years.我在一条24年船龄的船上做过。 01010185
A.
I have ever worked on a 24-year-old ship.
B.
I have ever worked on a 25-year-old ship.
C.
I have ever worked on a 23-year-old ship.
D.
I have ever worked on a 22-year-old ship.
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