储能器管汇溢流阀压力值最高为（）psi。A、5000 B、3000 C、3300 D

函数y=5^x+1的反函数是（　　）

A．y=log₅（x+1）

B．y=log_x5+1

C．y=log₅（x-1）

D．y=log_（x-1）5

根据句意完成句子,每空一词

1.-How do you study for a test?

-I study _________working with a group.

2.-Do you ever practise conversation with friends?

-I do that sometimes.I think it _________.

3.-Have you ever studied with a group?

-Yes.It improves my speaking _________.

4.What is your favourite _________ to learn more English？

5.He thinks that the movie is frustrating because the people speak too _________.

Everybody in the little town knew my first teacher, so we had no _____ finding his home.

A．difficulties in

B．difficulty with

C．difficulty

D．difficulty to

运用路线价法估价的前提条件是（）。

A.道路较规整

B.各宗土地的排列较整齐

C.有路线图

D.具有城市基准地价的区域

E.商业门市的可比实例数量较多

在极性流动相中加入离子对试剂，与被测物离子形成中性离子对（）

A.反相离子对色谱

B.反相色谱

C.正相色谱

D.离子交换色谱

E.离子抑制色谱