y＝3x+2
y＝2x+1
y＝-x+5
y＝-2
y＝-6
第1题：
The center of volume of the immersed portion of the hull is called the ______.
A.center of buoyancy
B.center of floation
C.center of gravity
D.tipping center
第2题：
The numeral in the center of a wind rose circle on a pilot chart indicates the ______.
A.total number of observations
B.average wind force on the Beaufort scale
C.average wind force in knots
D.percentage of calms
第3题：
A、damage
B、abuse
C、injury
D、hurt
第4题：
第5题：
A floating vessel will behave as if all of its weight is acting downward through the ______.
A.center of gravity
B.center of buoyancy
C.center of floation
D.Metacenter
第6题：
有如下程序：
#include＜iostream＞
using namespace std;
class Point{
int x, y;
public:
Point(int x1=0, int y1=0):x(x1), y(y1){}
int get(){return x+y;)
};
class Circle{
Point center;
int radius;
public:
Circle(int CX, int cy, int r):center(cx, cy), radius(r){}
int get(){return center. get()+radius;}
}；
int main(){
circle c(3, 4, 5);
cout＜＜c. get()＜＜end1;
return ():
}
运行时的输出结果是( )。
A) 5
B) 7
C) 9
D) 12
A．
B．
C．
D．
第7题：
A vessel behaves as if all of its weight is acting downward through the center of gravity，and all its support is acting upward through the ______．
A.keel
B.center of buoyancy
C.tipping center
D.amidships section
第8题：
A、has been built
B、is built
C、was built
D、is being built
第9题：
第10题：