下列各组离子一定能大量共存的是（） A．加入KSCN溶液显血红_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

下列各组离子一定能大量共存的是（）

A．加入KSCN溶液显血红色的溶液中：Fe²^＋、Mg²^＋、Cl^－、SO₄²^－

B．能与金属铝反应放出氢气的溶液中：K^＋、NO₃^－、Cl^－、Fe²^＋

C．常温下水电离出的c（H^＋）·c（OH^－）＝10^—20的溶液中：Na^＋、ClO^－、S²^－、NH₄^＋

D．pH＝7的溶液：Fe³^＋、Mg²^＋、SO₄²^－、Cl^－

答案

答案：A

单项选择题 A1/A2型题

刺激腕部尺神经，用表面电极在小指展肌记录诱发电位的形状（）

A.起始为正相的三相波

B.起始为负相的双相波

C.起始为正相的双相波

D.多相波

E.单相波

阅读理解

阅读理解。

PALACE
THEATRE
&OPERA HOUSE
MANCHESTER

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1. If you want to join Live Card to save money on tickets, you can call ______.

A. 0844 847 2484
B. 0800 587 5007
C. 0844 499 6699
D. 0161 245 6609

2. How can you pay for a ticket when you book by post?

A. By visiting the website of a post office.
B. By going to your local bank in person.
C. By enclosing your Live Card in an envelope.
D. By providing your credit card information.

3. What benefit can group bookers enjoy according to the text?

A. Delayed payment for tickets.
B. Invitations to opening nights.
C. Reduced booking fees by phone
D. Generous discounts on tickets.