制订计划的阶段是小组生命周期中的( ),在严格意义上还不是正式小组的开始。
A.工作准备阶段
B.工作开始阶段
C.中期转折阶段
D.后期成熟阶段
参考答案:A
___________lessons were not difficult.
A.Our few first short English
B.Our first few short English
C.Our few first English short
D.Few our first English short
蝶形引入光缆常选用纤芯型号()光纤。