电脱水器二级保养时,要检查脱水器电极板损坏情况,如果发现损坏,应及时修补;要检查平整极板,极板间距误差应小于()mm。
A.1
B.2
C.3
D.4
参考答案:C
In a recent year California produced an orange crop equal to only seventy-six percent of Florida’s orange crop. However, when citrus crops as a group, including oranges, were compared, the California crop was twenty-three percent greater than Florida’s crop for the same year. If the information above is true, which of the following can properly be concluded about the Florida and California citrus crops in the year mentioned
A.Florida’s climate was suited only to growing oranges.
B.Florida produced larger oranges than California did.
C.California produced more oranges than it did non-orange citrus.
D.California’s proportion of non-orange citrus crops was higher than Florida’s.
E.(E) California had more acreage that could be devoted to agriculture than did Florida.
配气机构一般进气门锥角为(),排气门锥角为()。
A.30°;45°
B.45°;30°
C.60°;60°