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【单选题】
家用电器铭牌上标注的额定电压是指 。A.
有效值
B.
平均值
C.
瞬时值
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反馈参考答案：
举一反三
【简答题】为预防老年人骨质疏松，膳食中应增加富含（）的食物。
【单选题】Which of the following is not considered an "owned" reserve?
A.
National currencies
B.
Gold
C.
Special drawing rights
D.
Oil facility
【简答题】USC (University of Southern California) University Hospital is a private, 293-bed research and teaching hospital staffed by the faculty of the famous Keck School of Medicine of USC. Opened in May,1991...
【单选题】In order to make our city green, .
A.
it is necessary to have planted more trees
B.
many more tress need to plant
C.
we must plant more trees
D.
our city needs more trees
【单选题】We welcome you to our city. you ______to our city.
A.
welcome
B.
are welcome
C.
have welcomed
D.
are welcoming
【简答题】PHP 中有很多以两个下划线开头的方法,称之为 【 】。
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