【单选题】三相四线制供电系统中,若电源线电压为380V,对称三相负载阻抗为22Ω,
【单选题】为避开铸圈热中心区,熔模应位于铸圈内径的中心,靠近铸圈顶端的
【多选题】关于联合国的说法正确的是哪些选项?
A.
联合国的主要机关包括大会、安全性理事会、国际法院和秘书处
B.
安理会由15个理事国组成,中国是常任理事国之一
D.
国际法院由15名法官组成,任何国家的公民不得超过3人
【单选题】The big problem is that people are ________ to thinking and acting in a responsible and independent way.
【单选题】关于联合国说法正确的是
A.
合国大会通过的决议对所有会员国产生广泛的影响
C.
合国是唯一有权采取行动维护国际和平与安全的机构
【单选题】听力原文: The University of California at Davis has government experiments with chemicals to get a bigger crop each year. But they haven't paid enough attention to necessary safety measures. In 1964 or 19...
B.
Its wheels were caught on a tree.
C.
Because the chemicals caught fire easily.