船舶系浮筒的主要特点是()。
①安全稳定;②船位准确;③离浮筒方便;④操作费时。
A.①~③
B.②~④
C.①、②、④
D.①~④
参考答案:D
32. ---I can’t see words on the blackboard clearly .
---Why, your eyes need _____ .Perhaps you need ______ glasses .
A.to examine; wear
B.to examine; to wear
C.to be examined; to wear
D.examining ; wearing
在资金来源结构变化,尤其是市场利率变化的条件下,以资金平均成本作为新贷款定价的基础较为合适。( )