某传感器在测量条件不变的情况下,给定一个固定的输入,进行多次测量,发现测量结果很接近真实值,但分散性比较大,因此,该传感器()。
A. 准确度比较低
B. 精确度比较低
C. 一定有人吃回扣买的。
D. 可能是山寨版,咱农民工闲暇时间做出来,挣外快的。
传感器的静态特性的用途是()。
A. 人们根据传感器的静态特性,在不同需求的情况下,来选择合适的传感器。
B. 厂家忽悠几个指标,弄几个参数,卖个好价钱。
C. 为了让“动态特性”有其存在的价值。
D. 静态么,输入量都不变了,闲着也是闲着,就发现了几个特性
某位移传感器,在输入量变化5mm时,输出电压变化为300 mV,则其灵敏度为()。
Listen to the recording again and fill in each of the blanks according to what you have heard.1) The freshman year at college is, generally speaking, a time filled with ______(1)_______, some anxiety, and ________________(2)_________________.2) The workload will be ______(3)________ and the major challenges of college work are a large amount of ________(4)___________ and the short ______(5)________.3) College Friendship will be among the __________(6)________and ________(7)________ of one’s life. It’s always exciting to discover how ________________(8)______________ college relationships can be.4) Students should remember that they are at college with an _________(9)____________: they shouldn’t waste time on _____________(10)______________.5) Going to college is not just to get a degree: it is to find out __________(11)_________ and ________________(12)____________________.