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【单选题】
关于实验室的防火,下列叙述与方法不正确的是( )A.
不能在敞口容器中加热和旋转易燃、易挥发的化学药品
B.
尽量防止或减少易燃气体的外逸，处理和使用易燃物时，应远离火源，注意室内通风，及时将气体排出
C.
易燃、易挥发的废物，须倒入废液缸和垃圾桶中
D.
一旦发生着火，首先立即切断电源，移走易燃物，然后根据易燃物的性质和火势采取适当的方法进行扑救
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举一反三
【单选题】The Council for Trade in Services:
A.
oversees the operations of the General Agreement on Trade in Services (GATS).
B.
provides technical assistance on matters involving trade in services to developing states.
C.
resolves disputes between member states by the consensus of its members.
D.
All of the above.
【单选题】下列各项，不属于病毒性心肌炎临床诊断依据的是
A.
心功能不全或心脑综合征
B.
心脏扩大
C.
血清肌酸磷酸激酶升高
D.
心电图表现为完全性右或左束支阻滞
E.
心电图有明显心律失常和ST-T段改变
【多选题】International trade in services broadly consists of __________
A.
commercial services
B.
investment income
C.
trade services
D.
government services
【简答题】International trade is the exchange of capital，goods and services across international border 017 territories．It is typically more costly than domestic trade．（ ）
【单选题】According to the direction of goods and services, international trade can be divided into ( ).
A.
importing
B.
trade in goods
C.
exporting
D.
trade in services
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