【单选题】Questions 3 and 4 are based on the news report you have just heard.
A.
The agreement is scheduled to take effect in 2050.
B.
China and the U.S. are two biggest emitters of greenhouse gases.
C.
UN secretary-General called on countries to deal with climate change.
D.
World leaders gather to sign the deal on the 46 th anniversary of Earth Day.
【单选题】考虑线序的问题,主机和主机直连应该用下列哪种线序的双胶线连接?
【单选题】201410 P53 下列选项中,属于政府财政会计原始凭证的是【 】
【判断题】过滤除菌操作时滤膜可直接放入电热干燥箱160°C,2小时灭菌。
【单选题】Questions 3 and 4 are based on the news report you have just heard.
A.
The U.S. charity, Save the Children, in Vietnam.
B.
Improving the health of mothers and babies in the world.
C.
Reducing the number of childhood deaths in South Asia.
D.
High death rates of mothers and babies in developing countries.