【单选题】用四舍五入法按要求对 846.31 分别取近似值,下列四个结果中,错误的是( )
【单选题】Which of the following is a feature of a democracy?
A.
Exercise of absolute control by one person or political party.
B.
Governance by people or elected representatives.
C.
Prohibition of entry to opposing political parties.
D.
Complete restriction of individual political freedom.
【单选题】which feature of a centrifugal pump reduces the need for renewing worn impellers and pump casings?
A.
close radial clearance between impeller hub and casing.
B.
Low rotational speed of impeller.
D.
Replaceable impeller and casing wear rings.
【单选题】Which of the following is a feature of a competence framework?
A.
Detailed learning outcomes setting out minimum occupational standards
B.
The required level of academic achievement
C.
Anticipated medium to long-term career milestones
D.
Personal qualities and attributes of the individual