皮皮学，免费搜题
登录
搜题
【单选题】
下面关于离心泵的说法错误的是（）A.
离心泵采用后弯叶片是为了提高效率.
B.
离心泵可以封闭启动.
C.
离心泵应采用止推轴承，以承担各种轴向力平衡装置不能完全平衡的轴向力.
D.
离心泵的理论扬程与液体种类无关.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】DFA M=({0,1,2,3},{a,b},t,0,{3}) t(0,a)=1 t(0,b)=2 t(1,a)=3 t(1,b)=2 t(2,a)=1 t(2,b)=3 t(3,a)=3 t(3,b)=3 Give the transition table of the DFA M.
【简答题】I suggested they do some experiments, or at least a _______ (调查).
【简答题】Combining the two sentences into one by using the adverbial clause.用条件状语从句合并句子 1. I reached the station. The train had already left. (时间状语从句) 2. I reached the station. The train was pulling out. (时间状语...
【简答题】有 NFA 定义如下: N=(S={0 , 1} , S ={a , b} , s 0 =0 , F={0} , move={ move(0,a)=0 , move(0,a)=1 , move(0,b)=1 , move(1,a)=0} )。 ( 1 )画出 N 的状态转换图; ( 2 )构造 N 的最小 DFA M ; ( 3 )给出 M 所接受语言的正规式描述; ( 4 )举出语言中的三个串,...
【简答题】A survey suggested that more than two-thirds of Chinese tourists said they used their smartphones to pay abroad and nearly 60% of surveyed merchants saw growth in revenue after adopting Chinese mobile...
【单选题】I suggested they do some experiments, or at least a survey .(选近义词)
A.
security
B.
investigation
C.
introduction
D.
invitation
相关题目：
参考解析：
知识点：
题目纠错 0
发布
