直接作用子血管平滑肌，降低心脏前后负荷的药物是
A．酚妥拉明B．多巴胺C．哌唑嗪D．巯甲丙脯氨酸E．硝普钠
参考答案：E
The teacher told the students that they______ to be useful men to the country.
A．wereallexpected
B．wereallexpecting
C．allwereexpected
D．allexpected
嚼肌间隙感染一般不会累及
A．翼颌间隙
B．颊间隙
C．颞下间隙
D．眶下间隙
E．颞间隙
