苔藓植物一般只有矮小的茎和又小又薄的叶，没有________，茎、叶中没有___

A 30-year-old primigravida tells the nurse that her hemorrhoids have become itchy and painful. The nurse instructs the client about relief measures. From which of the following statements by the client would the nurse suspect that the client needs further instructions

A. "I should sit in a warm sitz bath daily. "
B. "I can use a topical ointment for relief. "
C. "I should apply an ice pack at night. "
D. "I should decrease my fluid intake. "

下列除哪项外，均为里实热证的表现

A．身发高热
B．两颧娇红
C．口渴饮冷
D．大汗不止
E．脉象洪数

患者男，26岁，病前有发热及全身酸痛，近5d来双下肢进行性无力，伴大、小便潴留。检查见T以下痛、温觉及深感觉障碍，I双下肢肌力、肌张力减低。

该病例病变定位于（）

A.高颈髓

B.颈膨大

C.上胸髓（T1～T6）

D.下胸髓（T7～T12）

E.腰髓

方向舵左右运动的角度是多少？

A、12°

B、22°

C、32°

D、42°

喷射混凝土施工供水设施应保证喷头出的压力（）。

A．0.2MPa

B．0.5MPa

C．0.7MPa