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【多选题】
建筑钢材的力学特性直接关系到钢材的工程应用，以下关于钢材力学特性说法正确的是 ( )。A.
脆性临界温度数值越低，钢材的低温冲击韧性来考虑越好
B.
冷弯性能表征钢材在低温状态下随变形的能力
C.
表征抗拉性能的主要指标是耐疲劳性
D.
钢材硬度是指钢材抵抗冲击荷载的能力
E.
低温冲击韧性好的判断指标为脆性临界温度
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【单选题】下列是一些同学学习了《和朋友在一起》后的感受和打算,你认为正确的是 1小强:我要积极融入朋友圈,与朋友同行,互相学习,共同提高 2小明:我要维护自尊,他们不理我,我也就不去理他们 3小刚:我要珍惜朋友的友谊,朋友圈越大越好,朋友不管好坏,越多越好 4小勇:我要反思自己的交友行为,学会处理在与朋友交往中遇到的问题
A.
①②
B.
②③
C.
①④
D.
③④
【单选题】下列句中的“了”与“我们的朋友越来越多了。”中的“了”意义一致的是( )。
A.
老王离开了上海没有？
B.
钱先生不去广州了。
C.
我下了课就去找他。
D.
上星期我读了一本好书。
【单选题】The balance of payments used to indicate the long-term trend of a country's balance of payments is ( ).
A.
Trade balance of goods
B.
Basic balance
C.
Current account balance
D.
Official settlement balance
【单选题】An improvement in a country's balance of payments means a decrease in its balance of payments deficit, or an increase in its surplus. In fact we know that a surplus in a balance of payments
A.
is always beneficial.
B.
is usually beneficial.
C.
is always harmful.
D.
is sometimes harmful.
E.
is never harmful.
【单选题】Balance of payments?
A.
is defined as the statistical record of a country's international transactions over a certain period of time presented in the form of a double-entry bookkeeping.
B.
provides detailed information concerning the demand and supply of a country's currency.
C.
can be used to evaluate the performance of a country in international economic competition.
D.
all of the above
【单选题】An improvement in a country's balance of payments usually means a decrease in its balance of payments deficit, or an increase in its surplus. In fact we know that a surplus in a balance of payments ( ...
A.
is always beneficial.
B.
is always harmful.
C.
is never harmful.
D.
is sometimes harmful.
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