氯喹静脉注射时可引起()。 A.急性肾功能损害 B.心脏传导抑制 C.急性肝功能损害

题型:单项选择题

问题:

氯喹静脉注射时可引起()。

A.急性肾功能损害

B.心脏传导抑制

C.急性肝功能损害

D.呼吸抑制

E.精神障碍

考点:公卫正副高传染性疾病控制传染性疾病控制题库
题型:单项选择题

为探究锌与稀盐酸反应速率[以v(H2)表示],向反应混合液中加入某些物质,下列判断正确的是

A.加入铜粉,v(H2)增大

B.加入NaHSO4固体,v(H2)不变

C.加入水,锌不与水反应,v(H2)不变

D.加入NaCl固体,会增大Cl-浓度,使v(H2)增大

题型:单项选择题
在横线里最大能填几?
7×______<57 6×______<38 ______×9<46.
题型:单项选择题

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。学科&网

Hundreds of people have formed impressions of you through that little device(装置) on your desk. And they’ve never actually   41   you. Everything they know about you   42   through this device, sometimes from hundreds of miles away.   43   they feel they can know you   44   from the sound of your voice. That’s how powerful the   45   is.

Powerful, yes, but not always   46  . For years I dealt with my travel agent only by phone. Rani, my faceless agent whom I’d never met   47  , got me rock-bottom prices on airfares, cars, and hotels. But her cold voice really   48   me. I sometimes wished to   49   another agent.

One morning, I had to   50   an immediate flight home for a family emergency. I ran into Rani’s office   51  . The woman sitting at the desk,   52   my madness, sympathetically jumped up. She gave me a   53   smile, nodded while listening patiently, and then printed out the   54   immediately. “What a wonderful lady!” I thought.

Rushing out   55   I called out over my shoulder, “By the way, what’s your name?” “I’m Rani,” she said. I turned around and saw a   56   woman with a big smile on her face waving to wish me a safe trip. I was   57  ! Why had I thought she was cold? Rani was, well, so   58  .

Sitting back in the car on the way to the airport, I figured it all out. Rani’s   59  ---her warm smile, her nods, her ‘I’m here for you’   60  ---were all silent signals that didn’t travel through wires.

58()

A.calm

B.nice

C.proud

D.clever

题型:单项选择题

(1)如图1是用双缝干涉测光的波长的实验设备示意图.

Ⅰ.图1中①是光源,⑤是光屏,它们之间的②③④依次是______、______和______.(每空1分)

Ⅱ.已知双缝与屏的距离L,双缝间距d.用测量头来测量亮纹中心的距离.测量头由分划板、目镜、手轮等构成,转动手轮,使分划板左右移动,让分划板的中心刻线对准亮纹的中心(如图2(乙)所示),记下此时手轮上的读数,转动测量头,使分划板中心刻线对准另一条亮纹的中心,记下此时手轮上的读数.

(2)分划板的中心刻线分别对准第1条和第4条亮纹的中心时,手轮上的读数如图2(丙)所示,则对准第4条时读数x2=_______mm(允许误差)

(3)写出计算波长λ的表达式,λ=______(用x1、x2、L、d表示,不用计算).

(4)在屏上观察到了干涉条纹.如果将双缝的间距变大,则屏上的干涉条纹的间距将变______;(选大或小)

题型:单项选择题

有关慢性盆腔炎,以下说法正确的是()

A.子宫内膜炎症少见

B.病变主要有输卵管炎、输卵管卵巢炎、盆腔结缔组织炎

C.常有腰酸、下腹痛

D.宫旁一侧或两侧片状增厚

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