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【单选题】
关于重整反应系统降低压力操作的说法，下列表述错误的是（）。A.
降低压力操作有利于芳构化反应
B.
降低压力操作可提高催化重整液收
C.
降低压力操作会导致汽油辛烷值下降
D.
降低压力操作会导致催化剂积炭速率增加
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皮皮学刷刷变学霸
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【简答题】Canyou ___________ yourthoughtsbeforeyoutalk tome?(crystal)
【单选题】Though he was unhappy yesterday, he still did all the housework _____. [ ]
A.
by the way
B.
as usual
C.
as well
D.
as a result
【单选题】--- Doctor, canyou give me _____? --- Yes.
A.
some advices
B.
any advices
C.
an advice
D.
some advice
【简答题】补全下面对话。 A: Can you __________? B: No, but I want to __________. Can you __________ me? A: Sure. B: Great! When? A: I __________ I can __________ you in winter. B: Why? A: __________ there is _________...
【单选题】—You don't come from England, do you? —_______. I come from Australia. [ ]
A.
Yes, I do
B.
No, I do
C.
Yes, I don't
D.
No, I don't
【单选题】— You don't come from America, do you? — ______. I come from England. [ ]
A.
No, I do
B.
Yes, I do
C.
Yes, I don't
D.
No, I don't
【单选题】Everyone _____ I come from Sichuan. Actually, I come from Shandong. [ ]
A.
find
B.
think
C.
finds
D.
thinks
【单选题】早产是指
A.
指妊娠满20周至不足37周
B.
指妊娠满20周至不足36周
C.
指妊娠满28周至不足37周
D.
指妊娠满28周至不足36周
E.
指妊娠满27周至不足36周
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