皮皮学，免费搜题
登录
搜题
【判断题】
统计分组以后,掩盖了各组内部各单位的差异,而突出了各组之间单位的差异。 A. 对 B. 错A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】【单选】The mean draft of a ship is draft ______.
A.
midway between the forward and aft draft marks
B.
at the center of flotation
C.
at the load line
D.
at the center of buoyancy
【单选题】For a floating vessel，true mean draft is always the（）.
A.
average of the observed drafts
B.
draft at the center of flotation
C.
draft corresponding to the calculated displacement
D.
mean of the calculated drafts
【单选题】关于心脏和大血管的摄片检查错误的是下列哪一项（）
A.
能了解心内变化
B.
资料能保存供复查时参考
C.
可作会诊使用，可供仔细观察与测量
D.
可以初步观察心脏形态，估计各房室大小和肺循环异常的类型
E.
不能了解动态变化和测算血流动力学情况
【单选题】The mean draft of a ship is the draft _______
A.
Midway between the forward and aft draft marks
B.
At the center of flotation
C.
At the loadline
D.
At the center of buoyancy
【单选题】The mean draft of a ship is the draft _____.
A.
midway between the forward and aft draft marks
B.
at the center of flotation
C.
at the load line
D.
at the center of buoyancy
相关题目：