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【多选题】
下列哪些是水溶性维生素( )。A.
维生素C
B.
维生素E
C.
维生素B2
D.
维生素B6
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反馈参考答案：
举一反三
【单选题】某吸收塔中,物系的平衡线方程为y=2.0x,操作线方程为y=3.5x+0.001,当y1=0.06,y2=0.0030时,x1=( ),x2=( ),L/V=( )。
A.
0.0597；0.0005714；3.5
B.
0.01686；0.0005714；3.5
C.
0.0337；0.0005714；3.5
D.
0.01686；0.0003615；3.5
【单选题】The call feature of a bond means the______.
A.
investor can call for payment on demand
B.
investor can call only if the firm defaults on an interest payment
C.
issuer can call the bond issue during the first three years
D.
issuer can call the bond issue before the maturity date
【简答题】A generation gap(代沟)has become a serious problem.! read a report about it in the newspaper. Some children have killed 31 after quarrelling (爭吵)with 32 .I think this is because they don't often have a ...
【简答题】根据对话情景，填入恰当的单词。 A: What do you usually do 1 school? B: I 2 my homework first, then do some chores. A: Really? Do you 3 doing chores? B: Yes, very much I'd like to 4 supper, because I like to cook. Do ...
【判断题】Call display can help you screen out those disturbing and unsolicited calls.
A.
正确
B.
错误
【单选题】call display
A.
to answer the phone
B.
a person who answers telephone-related questions when you dial “0”
C.
a telephone that you can take with you away from your house; mobile phone
D.
a screen that shows you who is calling
【简答题】某吸收塔中,物系的平衡线方程为y=2.0x,操作线方程为y=3.5x+0.001,当y1=0.06,y2=0.0015时,x1=_____,x2=____, L/G=____,气相传质单元数NOG=_______.
【单选题】某吸收塔中,物系的平衡线方程为y=2.0x,操作线方程为y=3.5x+0.001,当y1=0.06,y2=0.0030时,x1=_(A 0.084;B0.01685;)__,x2=_(C 0.0015;D0.0005714;),L/V=_(E3.5;F 5.2)_,气相传质单元数NOG=_____(G 6.18;H 3.9;)__.
A.
ACEG
B.
BDEG
C.
ACEH
D.
BDFG
E.
BCEG
F.
BCEH
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