仿形打磨机启动时右手拉动启动手柄缓慢移动,直到感到有阻力时,快速拉动启动绳,汽油机便会启动。
参考答案:对
患者男,45岁。上腹胀痛5年,常在空腹或饥饿时发生,进食后缓解,近2天出现黑便。查体:上腹稍偏右有明显压痛。
抑酸作用最强的药物是()
A.西咪替丁
B.奥美拉唑
C.氢氧化铝
D.氨苄西林
E.枸橼酸铋钾
The meaning of ebb tide is that().
A.tide is falling from high water to low water
B.tide is rising from low water to high water
C.tide is reaching to a highest level
D.tide is reaching to a lowest level