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【单选题】
在气液比检测中下面哪些说法是不正确的( )。A.
如果气液比不在标准限值范围内，而气液比检测值与限值的差小于0.1时，可再做2次气液比检测，但之间不能对加油系统和油气回收系统作任何调整。
B.
采用累进式流量计检测时，应记录每次检测之前气体流量计的最初读数。除非经过核查，不要将前一次测试的最终读数作为当前测试的最初读数。采用电子流量计时零。
C.
采用电子流量计时零。
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举一反三
【简答题】正四棱锥 中, ,则它的体积为 ____.
【多选题】Which of the following statements are true about exclamation marks?
A.
They are used to downplay a sentence.
B.
They can express intense emotions such as anger and joy .
C.
They are usually placed at the end of a sentence.
D.
Exclamation marks are a form of punctuation.
【单选题】A great deal of the knowledge we have about household goods【C1】______ largely from the advertisements we read. Advertisements introduce us to new products or remind us of the existence of ones we alre...
A.
obtains
B.
requires
C.
gains
D.
derives
【简答题】exclamation mark
【简答题】exclamation mark
【单选题】The household goods __________ of great concern to the family with a new house.
A.
are
B.
is
C.
has been
D.
had been
【简答题】正四棱锥 中, ,则它的体积为 .
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