齿轮油泵效率(),因此,一般吸油高度不大于500毫米。
A.一般
B.最高
C.最低
参考答案:C
间接监督,是指不直接具有法律效力的监督,社会组织、公民的监督和新闻媒体的舆论监督都属于不具有直接的法律效力的监督。 ( )
Monsoons are characterized by().
A.light,variable winds with little or no humidity
B.p,gusty winds that blow from the same general direction all year
C.steady winds that reverse direction semiannually
D.p,cyclonic winds that change direction to conform to the passage of an extreme low pressure system