根据领导的生命周期理论，当下属具有高能力一低意愿的特点时，适宜的领导风格是（）。

In small angle stability, the metacentric height ______.

A.is found in the hydrostatic tables for a level vessel

B.multiplied by the displacement yields the righting moment

C.is always positive

D.is calculated by subtracting KG from KM

A.positive

B.negative

C.zero

D.vertical

For a standard external involute spur gear,,,, (1) when actual center distance, find meshing angleand pitch circle. (2) when meshing angle, find actual center distance，pitch circleand clearance. (3) compare the ratio offor the above two cases.

A. at small angles of inclination

B. when loaded with minimum deck load

C. when at transit draft

D. when GZ is zero

A. the limit of positive stability

B. the limit of small-angle stability

C. maximum offset

D. downflooding

A．off-center loading

B．stiff characteristics

C．excessive pitch or roll

D．negative initial stability

A、economic forces

B、social and cultural forces

C、political, governmental and legal forces

D、technological forces

E、natural forces

When towing，the least amount of tension will be on each bridle leg when the two legs ().

A.form. a large angle with each other

B.form. a small angle with each other

C.are of unequal length

D.are joined by a fishplate

A.heel until the angle of loll is reached

B.list until the center of buoyancy is aligned vertically with the center of gravity

C.trim to the side opposite TCG until all moments are equal

D.decrease draft at the center of flotation

A.with a short tow astern

B.nearly bow to bow，at a small angle

C.amidships，parallel to the barge

D.nearly stern to stern，at a small angle to the barge