报关单位有下列( )情形时，海关取消其报关权。A．不履行纳税义务和其他应履行义务

CPR is cardiopulmonary resuscitation (心肺复苏). It forces air into the lungs and pumps(用泵抽) blood and oxygen to the brain in order to increase the chances that a person whose heart stops will survive. It increases the chances that he or she will suffer little or no brain damage.

The American Heart Association suggests two ways to perform CPR. One combines the use of hands to pump the victim’s chest with rescue breathing. The other method is called “Hands-Only CPR”, which is for people who are unwilling or unable to perform rescue breathing. Some people fear infection(感染). Others say they are afraid of making the patient worse.

But the American Heart Association strongly asks people in contact with a victim(受害者) to take action and tells how to take it. It says you can recognize a person needing CPR. He or she is unconscious(无意识) -- unable to communicate or react to surroundings or speech. His or her skin has lost color. The person is not breathing. If such conditions describe the situation, chances are the heart has stopped beating.

You should act by calling for help, or sending someone else. Even if you cannot do mouth-to-mouth rescue breathing, you can perform Hands-Only CPR. You can do chest compressions(压迫) that help to keep blood flowing to the brain and the heart. To perform the compressions, place one hand over the other and press firmly on the center of the victim’s chest. Push down about five centimeters. Aim for one hundred compressions each minute.

Doctor Sayre suggests that medical workers do both the breathing method and chest compressions as usual. He says some victims, including babies, need the mouth-to-mouth breathing with the compressions. Still, the doctor says it is better to do just chest compressions than to do nothing.

根据下图所示装置回答问题：

（1）写出下列仪器的名称：①_________， ②___________。

（2）用氯酸钾制取氧气，选择的发生装置是_________，反应的化学方程式为___________________。

（3）实验室若用B装置来制取二氧化碳时，往长颈漏斗中应加入_______。若用G来收集二氧化碳，二氧化碳应从_____进（选“a”或“b”），制取二氧化碳最好选择的发生装置是_______（选择“B”或“C”）,与另一个装置相比，其优点是：______________________。

（4）硫化氢是一种无色且有臭鸡蛋气味的气体，能溶于水，实验室用硫化亚铁跟稀硫酸反应制取硫化氢气体。

试回答：

①硫化氢气体具有臭鸡蛋气味，这是硫化氢的__________(填“物理”或“化学”)性质。

②实验室制取H₂S气体时，发生装置应选用_____，收集装置应选用__________。

下列当事人订立合同说法正确的是()。

A.当事人订立合同要经过申请和协议和两个订立合同的必经程序

B.当事人订立合同要经过要约和协议这两个订立合同的必经程序

C.当事人订立合同要经过协议和承诺这两个订立合同的必经程序

D.当事人订立合同要经过要约和承诺这两个订立合同的必经程序

慢性支气管炎咳痰的特点是

A．白色泡沫痰
B．铁锈色痰
C．痰中带血
D．痰色微黄夹绿
E．胶冻样痰

皮肤吸收外界物质的途径有（）

A.角质层

B.毛囊皮脂腺

C.汗管口

D.毛发