开坡口的目的主要是保证焊件在厚度方向上全部焊透。( )
参考答案：对
— This is really a wonderful party with interesting people and great food.
— I'm glad you are _____. [ ]
A. liking it
B. enjoying yourself.
C. at the party
D. are loving
职业道德的主要内容包括职业道德意识、职业守则、（）等内容。
A、公共道德行为规范
B、伦理道德行为规范
C、法律法规行为规范
D、职业道德行为规范
