If I could help___,I needn’t have taken

题型:选择题

问题:

If I could help___,I needn’t have taken trouble to send the broken computer to the repairing centre.

A.myself

B.it

C.that

D.this

考点:不定代词人称代词相互代词疑问代词关系代词
题型:选择题

若x为血类型,请写出与!x等价的C语言表达式______。

题型:选择题

吗啡治疗心源性哮喘的机制是什么?

题型:选择题

They       your diamond,but I didn’t think they found it. [ ]

A.searched

B.in search of

C.make a search of

D.went searching for

题型:选择题

如图所示为“S”形玩具轨道,该轨道是用内壁光滑的薄壁细圆管弯成,放置在竖直平面内,轨道弯曲部分是由两个半径相等的半圆对接而成,圆半径比细管内径大得多,轨道底端与水平地面相切,轨道不可移动。弹射装置将一个小球(可视为质点)从A点以v0水平弹射向B点并进入轨道,经过轨道后从最高点D水平抛出,已知小球与地面AB段间的动摩擦因数μ=0.2,不计其他机械能损失,AB段长L=1.25 m,问:

(1)若圆的半径R=0.25m,v0至少多大才能使小球从D点抛出?

(2)若v0=9.22m/s,圆的半径R取何值时,小球从D点抛出后的水平位移最大(抛出后小球不会再碰到轨道)?

题型:选择题

Linda is a 19-year-old primipara who delivered a viable male neonate 2 hours ago. She has decided to breast-feed. Her 22-year-old husband supports her decision. She tells the nurse, "My mother breast-fed all of her children, but I’m going to need lots of help with breastfeeding. I’m worried that I won’t be able to do this. " Which of the following should the nurse include when assessing the client()

A. Determine the client’s level of motivation to breast-feed.

B. Perform a complete physical examination to determine her need for help.

C. Assess her body-to-fat ratio and nutritional status before beginning breast-feeding.

D. Ask the client if she has read any literature about breast-feeding.

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