| People appear to be born to compute. The numerical
skills of children develop so early and so inexorably that it is easy to imagine
an internal clock of mathematical maturity guiding their growth. Not long after
learning to walk and talk, they can set the table with impressive accuracy one
plate, one knife, one spoon, one fork, for ’each of the five chairs. Soon they
are capable of noting that they have placed five knives, five spoons, and five
forks on the table and, a bit later, that this amounts to fifteen pieces of
silverware. Having thus mastered addition, they move on to subtraction. It seems
almost reasonable to expect that if a child were secluded on a desert island at
birth and returned seven years later, he or she could enter a second-grade
mathematics class without any serious problems of intellectual
adjustment. O A. Children naturally and easily learn mathematics. B. Children learn to add before they learn to subtract. C. Most people follow the same pattern of mathematical development. D. Mathematical development is subtle and gradual. [单选题]安全航速是指
A.备车,并以缓慢的速度行驶 B.与他船构成碰撞危险时,采用微速前进 C.允许有充分时间,以便能采取适当而有效的行动(包括把船停住)以避免碰撞的速度 D.只要来得及采取行动,不至于最后发生碰撞的速度 [单选题]Je4A3226 断路器连接瓷套法兰时，所用的橡皮密封垫的压缩量不宜超过其原厚度的（）
A.1/5 B.1/3 C.1/2 D.1/4. [判断题]H×N3型内燃机车空气干燥器具有一个DC64V的电气控制接口,用来使干燥器与排水阀之间循环工作。 ( ) DC74V
A.正确 B.错误 [单选题]政府质量监督的性质属于( )。
A.行政执法行为 B.行政监督行为 C.行政管理行为 D.行政司法行为 [多选题]某企业向银行借款1200万元，利率9%，银行要求保留8%的补偿性余额，则下列描述正确的有()。
A.实际可动用的贷款为1200万元 B.该借款的实际利率为9% C.实际可动用的贷款为1104万元 D.该借款的实际利率为9.78% [单选题]CRH380A型动车组三级修抗侧滚连杆使用螺栓 M24X80、弹垫 ( )将连杆组成固定在连杆座上
A.25 B.26 C.24 D.28 我来回答: 提交
|
