轴承代号和厂商应标注在()。
A.外径
B.内径
C.端面
D.保持架
参考答案:C
To his disappointment, the opinion he had stuck ______ out wrong. [ ]
A. to turn
B. to turning
C. to turned
D. to be turned
领导环境的制约性表现在()
A.环境要素制约着领导目标选择
B.领导环境影响领导行为方式的运用
C.领导者在领导环境中的作用总是被动的
D.领导者只能在环境中作出有限的选择