M胆碱受体激动时引起 A．支气管和胃肠道平滑肌收缩 B．瞳孔括约肌和睫状肌收缩 C．

The hotel turned us down because we didn’t make reservations, but we ______ have.

A．might

B．can

C．must

D．should

In relation to the law of contract, explain what is meant by the doctrine of ‘fictional fulfilment’. (10 marks)

判断气管导管误入食管的最佳方法是()

A．SpO2下降

B．手控通气阻力大

C．通气时腹部隆起

D．听诊

E．呼气末CO2曲线消失

芒硝在太干燥的环境中贮存易发生（）

A.泛油

B.风化

C.变色

D.粘连

亚健康有哪些表现