优点是安装方便,占地面积小,流体阻力较小,补偿能力较大;缺点是轴向推力大,易漏水漏气是()的特点。
A. 方形补偿器
B. 填料式补偿器
C. 波形补偿器
D. 自然补偿器
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A vessel has a charter party for one voyage to carry a full load of manganese from Durban,South Africa,to Baltimore,Maryland,at a stipulated rate per ton. Which type of contract is involved? ().
A. Bareboat charter party
B. Voyage charter party
C. Demise charter party
D. Time charter party
热硬性树脂加热后会()。
A. 变软
B. 变硬
C. 不变
D. 先变硬,和变软
西安邮电大学的英文译名是()
A. Xi’an YouDian University
B. Xi’an University of Postsand Telecommunications
C. Xi’an Universityof Mobileand Electronics
D. Xi’an University of Computer and Digital