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表面（Surface）
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考题
____ is covered with heavy snow.
A.The earth's surfaceB.The surface of earthC.The surface earthD.The earth surface
考题
阅读以下说明和C++程序，将应填入(n)处的字句写在对应栏内。【说明】以下程序的功能是计算正方体、球体和圆柱体的表面积和体积并输出。程序由4个类组成：类cube、sphere和cylinder分别表示正方体、球体和圆柱体；抽象类 container为抽象类，提供了两个纯虚拟函数surface_area()和volum()，作为通用接口。【C++程序】include＜iostream.h＞define pi 3.1416class container｛protected:double radius;public:container(double radius) {container::radius=radius;}virtual double surface_area()=0;virtual double velum()=0;};class cube:(1){ //定义正方体类public:cube(double radius):container(radius){};double surface_area () {return 6 * radius * radius;}double volum() {return radius * radius * radius;}};class sphere:(2){ //定义球体类public:sphere(double radius): container(radius){};double surface_area() { return (3);}double volum() {return pi * radius * radius * radius * 4/3;}};class cylinder:(4){ //定义圆柱体类double height;public:cylinder(double radius,double height):container(radius){container::height=height;}double surface_are a () { return 2 * pi * radius * (height+radius); }double volum () {return (5);}};void main(){container * p;cube obj1 (5);sphere obj2(5);cylinder obj3(5,5);p=obj1;cout＜＜“正方体表面积”(＜＜p-＞surface_area()＜＜end1;cont＜＜“正方体体积”＜＜p-＞volume()＜＜end1;p=obj2;cout＜＜“球体表面积”＜＜p-＞surface_area()＜＜end1;cout＜＜“球体体积”＜＜p-＞volume()＜＜end1;p=obj3;cout＜＜“球体表面积”＜＜p-＞surface_area()＜＜end1;cout＜＜“球体体积”＜＜p-＞volume()＜＜end1;}
考题
The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the ______．A.Transverse free surface correction for the vesselB.Sum of the vertical moments of the vesselC.Sum of the longitudinal free surface moments of the vesselD.Longitudinal centerline of the vessel
考题
根据NURBS点或者CV表面的形状变形对象。对象将趋于与目标对象的表面一致地编辑器为（）。A、Surf DeformB、Displace MeshC、Surface MapperD、Skin
考题
底漆用于出白金属表面， 防止其生锈。（）A、Topside paint is applied to a bare surface to give protective against rust.B、Undercoat is applied to a bare surface to give protection against rust.C、Primer coat is applied to a bare surface to give protection against rust.D、Topcoat is applied to a bare surface to give protection against rust.
考题
单选题To calculate the free surface correction，it is necessary to divide the free-surface moments by the（）.A
total weight of liquid loadsB
total displacementC
lightweightD
deadweight
考题
单选题The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.A
transverse free surface correction for the vesselB
sum of the vertical moments of the vesselC
sum of the longitudinal free surface moments of the vesselD
longitudinal centerline of the vessel
考题
单选题What is the purpose of a striker plate? （）A
Provides surface for applying force on machineryB
Provides landing surface for the sounding bobC
Absorbs machinery vibrationD
Prevents valve stem over-travel
考题
单选题Many vessels are provided with flume tanks，which also have a dump tank located under the flume tanks. In the event the ship is damaged，you could dump the flume tanks into the dump tank which would（）.A
reduce the free surface effect and raise the KGB
not have any effect on free surface and raise the KGC
reduce the free surface effect and lower the KGD
not have any effect on free surface and lower the KG
考题
单选题The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.A
volume of liquid in the tankB
volume of displacement of the vesselC
location of the tank in the vesselD
height of the center of gravity of the vessel
考题
名词解释题surface receptor superfamilies (表面受体超家族)
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