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【单选题】
I am ______of the same old breakfast every morning.A.
worn out
B.
tired
C.
ill
D.
exhausted
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举一反三
【单选题】We asked both John and Jerry,but______could offer a satisfactory explanation.
A.
neither
B.
either
C.
both
D.
nor
【单选题】We asked both john and jerry, but ______ could offer a satisfactory explanation.
A.
both
B.
either
C.
neither
D.
none
【简答题】容器在使用前必须经过洗涤,盛装测金属类水样的容器,先用___,用开水冲洗,再用___的盐酸或硝酸浸泡8h,用自来水冲洗,清洗干净
【单选题】Suppose users share a 2 Mbps link. Also suppose each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20 percent of the time. Suppose now there are three users. F...
A.
0.001
B.
0.002
C.
0.004
D.
0.008
【单选题】Jerry has promised to keep the secret, so he won't tell anyone ________ asked to.
A.
until
B.
now that
C.
unless
D.
even though
【简答题】用两个铂电极电解 KOH 水溶液。当析出 1 mol 氢气和 0.5 mol 氧气时,通过的电荷量是 C·mol -1 。
【单选题】I asked Jerry and Ken to come to my house for study, but ______ of them came. [ ]
A.
none
B.
either
C.
neither
D.
both
【单选题】The purposes for several users to share a mainframe are ______.
A.
to divide the cost of the equipment among them
B.
to utilize the equipment to the maximum extent
C.
to produce fewer PCs
D.
both A and B
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