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【单选题】
平时过滤器内总是充满油，然而换装新滤芯后，过滤器内则充满油气混合气。新滤芯又有高的起电特性，因此就出现了过滤器内静电放电和蒸气爆炸的潜在威胁。这时如以较高速度排气和加油，发生过滤器静电爆炸是完全可能的。为此在换新滤芯和排除容器内气体时，泵速必须限制在最小范围内，一般不大于（）额定速度，最好采取自流式为宜。A.
10%
B.
20%
C.
30%
D.
40%
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【单选题】Look at the following words: heal health healthy healthily Which one is a verb?
A.
heal
B.
health
C.
healthy
D.
healthily
【简答题】七选五：A garden that’s just right for you Have you ever visited a garden that seemed just right for you七选五：根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 A garden that’s just right for you Have you ever visit...
【单选题】The Middle Ages was also called the ________ for the reason that almost all peop le were organized by the Christian church .
A.
“A ge o f Faith”
B.
“ Dark Age"
C.
“ Age of Glory ”
D.
“ Christian Ag e”
【单选题】You have just purchased a brand new router and wish to have the router prompt you through the initial configuration commands. Which router mode does this describe?
A.
ROM Monitor mode
B.
SETUP mode
C.
Autoflash mode
D.
RXBOOT mode
E.
None of the above
【单选题】---Alice, you look puzzled, Have you understood it? ---No．I _____another problem just now．
A.
l have thought of
B.
am thinking of
C.
had thought of
D.
was thinking of
【单选题】— Alice, you look puzzled. Have you understood it? — Yes, I _____ another problem just now. [ ]
A.
have thought of
B.
thought of
C.
was thinking of
D.
had thought of
【单选题】The Middle Ages was also called the ________ for the reason that almost all peop le were organized by the Christian church . A . A ge o f Faith B. Dark Age" C.Age of Glory D. Christian Ag e
A.
A ge o f Faith
B.
Dark Age
C.
Age of Glory
D.
Christian Ag e
【单选题】I just couldn’t believe you should have made such a silly mistake. Look! You have __________ such an important document.
A.
left off
B.
left out
C.
left alone
D.
left aside
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