圆翼型散热器是一根外面带有圆翼片的圆管,其规格用内径DN表示;长翼型散热器是一个在外壳上带有肋片的中空壳体,分为“大60”和“小60”。
参考答案:对
根据中文提示,用词组的适当形式填空,每空一词。
小题1:Hurry up!We are ________ _________(等候)you at the gate.
小题2:He was so tired that he _________ _________(入睡)as soon as he lay down.
小题3:Michael is _________ _________(擅长)physics but he is weak in chemistry.
小题4:Li Lei seldom goes to school ________ ________(步行).He usually takes a bus there·
小题5:A lot of trees were _________ __________(砍伐).As a result,there were more sandstorms.
水下30m深处的压力相当于()温度为0℃,纬度为45°的每平方厘米的海平面上所承受的压力为()
A.0.4MPa
B.<24V
C.0.13MPa
D.表压
E.标准大气压