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【单选题】
大量咯血是指每天咯血量大于A.
100 mL
B.
500 mL
C.
400 mL
D.
300 mL
E.
200mL
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举一反三
【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
【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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