皮皮学，免费搜题
登录
搜题
【简答题】
Tech World is a company which manufactures mobile phone handsets. From its past experiences, Tech World has realised that whenever a new design engineer is employed, there is a learning curve with a 75% learning rate which exists for the first 15 jobs. A new design engineer has just completed his first job in five hours. Note. At the learning rate of 75%, the learning factor (b) is equal to -0·415. How long would it take the design engineer to complete the sixth job? A. 2.377 hours B. 1.442 hours C. 2.564 hours D. 5 hours
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】埋弧焊将导电嘴下端到焊件表面的距离作为焊丝的伸出长度，焊丝伸出长度一般为焊丝直径的（）倍。但不锈钢焊丝或其他电阻较大的材料，伸出长度应小些。
A.
1～5
B.
6～10
C.
10～15
【简答题】施工现场准备有哪些内容?
【简答题】设浮点数的格式为:阶码5位,用移码表示,尾数6位,用补码表示,阶码在前(包括符号位),尾数在后。计算X×Y和X/Y(阶码用移码计算,尾数乘法用booths法计算,尾数除法用原码加减交替除法计算)。X = -29/256,Y = 15/。要求结果写成题目规定的浮点数格式。 请写出具体的解题过程和答案,拍照上传。
【简答题】修一条公路，计划2中天完成任务，实际16天就完成了，工期缩短了（ ） A．80% B．20% C．25%
【简答题】施工现场准备包括哪些内容
【单选题】It was global warming , rather than other causes , ______ led to the extreme weather .
A.
which
B.
who
C.
that
D.
what
【单选题】The experts reached ______ about the causes of global warming in the international conference.
A.
consensus
B.
pledge
C.
commitment
D.
racket
相关题目：