Servlet可以在以下哪三个不同的作用域存储数据？（）
A. 请求、会话和上下文
B. 响应、会话和上下文
C. 请求、响应和会话
D. 请求、响应和上下文
查看答案
GC120型和JY290型轨道车发动机的额定功率分别为：117.6，22kW。
A. 正确
B. 错误
钢筋混凝土柱下条形基础梁的高度与柱距的比值，宜采用下列哪项？（）
A. 1/4～1/2
B. 1/8～1/4
C. 1/10～1/8
D. 1/12～1/10
JY290、GCY270、GCY300型轨道车变速器均为双循环圆变速器，液力换挡。
A. 正确
B. 错误
You will load and carry a bulk cargo of sulphur at ambient temperature. Which statement is true?（）.
A. Wooden covers must be laid over the bilge wells to prevent the sulphur from entering the bilges
Bulk sulphur may be carried without a special permit providing the vessel complies with all applicable regulations
C. The majir charateristic of this cargo is that it forms sulfuric acid upon contact with water
D. Other hazardous material may not be stowed in the same hold as the sulphur bue may carried on deck above the hold
微信支付 
支付宝支付