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搜题
【单选题】
治疗铜绿假单胞菌性结膜炎的处方药是
A.
碘苷滴眼剂
B.
羟苄唑滴眼剂
C.
两性霉素B滴眼剂
D.
多粘菌素滴眼剂
E.
左氧氟沙星滴眼剂
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举一反三
【单选题】下列推理正确的是   (    )
A.
因为a//d, b//c,所以c//d
B.
因为a//c, b//d,所以c//d
C.
因为a//b, a//c,所以b//c
D.
因为a//b, d//c,所以a//c
【多选题】Unless measures are taken at once, there is a possibility that all the oceans of the world will be dead by the next century. How can this possibly happen? We have already seen that people 【 C1 】 _____...
A.
limitations
B.
seashores
C.
allow
D.
invade
E.
close
F.
poisonous
G.
afterwards
H.
agenda
I.
edit
J.
figure K. impossible L. alone M. effects N. calculate O. extensive
【单选题】如下哪一项可作为管内流体流动流向判据? ( )
A.
流体从压强高处向压强低处流动
B.
流体从总势能高处向总势能低处流动
C.
流体从位能高处向位能低处流动
D.
流体从动能高处向动能低处流动
【简答题】Revise the following sentences, omitting needless words . 1.Zhao was the person who was elected the representative of the class by the whole class. 2.Permit me to take this opportunity to inform you t...
【简答题】People are by law to obey the traffic rules.
【单选题】What are institutions required to do by a California law?
A.
Take new security measures.
B.
Write detailed reports.
C.
Catch hackers.
D.
Inform. the affected people that their personal information has been stolen.
【单选题】a、b、c、d为互不重合的四条直线,则下列推理中正确的是(  )
A.
因为a ∥ b,b ∥ c,所以d ∥ c
B.
因为a ∥ d,b ∥ c,所以d ∥ c
C.
因为a ∥ d,b ∥ d,所以a ∥ b
D.
因为a ∥ d,a ∥ b,所以c ∥ d
【简答题】酶促反应速度( v )达到最大速度( Vm )的 25% 时,底物浓度 [S] 是 Km 的 __________ 倍;而 v 达到 Vm的75% 时, [S] 则是 Km 的 __________ 倍。
【判断题】因为A-B=(A∪B)-B,所以A=A∪B
A.
正确
B.
错误
【单选题】如下哪一项可作为管内流体流动流向判据?()
A.
流体从总势能高处向总势能低处流动
B.
流体从压强高处向压强低处流动
C.
流体从位能高处向位能低处流动
D.
流体从动能高处向动能低处流动
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