In education there should be a good balance among the branches of knowledge that contribute to effective thinking and wise judgement. Such balance is defeated by too much emphasis on any one field. This question of balance involves not only the relation of the natural sciences, the social sciences, and the arts but also relative emphasis among the natural sciences themselves. Similarly, we must have a balance between the current and classical knowledge. The attention of the public is continually drawn to new possibilities in scientific fields and the discovery of new knowledge; these should not be allowed to turn our attention away from the sound, established materials that form. the basis of courses for beginners.
According to the passage, the task of education is fairly complicated because ______.
A.the current public school system is too complicated to be understood
B.the public school system has no choice of what to teach
C.it is difficult to decide whether elementary science should be taught in public schools
D.the educators should take care of both ordinary and gifted students
第1题
舷角是_____。
A.船首尾线至2方位线的夹角
B.物标的方向
C.真航向减去真方位
D.真北至物标方位线的夹角
第2题
物标的舷角或相对方位是指,在测者地面真地平平面上_________。
A.船首尾线至物标方位线的夹角
B.物标的方向
C.真航向减去真方位
D.真北至物标方位线的夹角
第3题
真方位指在测者地面真地平平面上_____________。
A.船首尾线至物标方位线的夹角
B.物标的方向
C.真航向减去真方位
D.正北至船舶与物标连线的夹角
第6题
真方位是_____。
A.真北线与方位线的夹角
B.航向线与方位线的夹角
C.真北线与船首线的夹角
D.真北线与航向线的夹角
第7题
真方位是()。
A.真北线与方位线的夹角
B.航向线与方位线的夹角
C.真北线与船首线的夹角
D.真北经与航向线的夹角
第8题
某船真航向235°,测得物标舷角为315°,则该物标的真方位为()。
A.190°
B.235°
C.315°
D.550°
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