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【单选题】
以下哪项是直肠排便功能重要的环节（）。
A.
直肠下段发生排便反射
B.
结肠的蠕动，粪便下行
C.
直肠能分泌黏液
D.
外括约肌的自主松弛
E.
腹压的增加
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】直肠与肛管周围容易发生感染的原因是
A.
排便器官,易污染
B.
血运丰富,营养充分
C.
周围有数个间隙,其内充满正常肠道菌群
D.
周围有数个间隙,其内充满脂肪结缔组织
E.
周围有数个间隙,其内充满淋巴血管与脂肪组织
【单选题】直肠肛管周围脓肿的叙述正确的是
A.
肛周疼痛不剧烈
B.
是慢性化脓性感染
C.
常自行破溃，可形成低位肛瘘
D.
在直肠肛管围脓肿中较少见
E.
多有高热、寒战、全身疲乏不适
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub