放映室着火，应先破拆观众厅外部房盖适当部位，或利用房盖上面的排气窗（）水枪阵地。
A、空间设置
B、对称设置
C、一侧设置
D、中间设置
参考答案：B
Tom ________ two of his classmates ________ invited to the party.
A．as well as; was
B．as good as; were
C．and; have
D．as well; has been
为完成安全输血的目标需反复提高工作人员所具有的（）.技能以及工作态度。
A.学历
B.学位
C.职务
D.知识
