background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg
png的最优值是（） A: -2 B: -6 C: -45/4 D: -7
png的最优值是（） A: -2 B: -6 C: -45/4 D: -7
background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层（）。
background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层（）。
显著性假设检验中关于原假设[img=25x24]180317fff403c2c.png[/img]和备择假设[img=20x25]180317fffbf5b05.png[/img]的叙述不正确的是（ ） A: 原假设[img=25x24]1803180004c2a2c.png[/img]和备择假设[img=20x25]180318000c91eec.png[/img]地位是平等的; B: 原假设[img=25x24]1803180004c2a2c.png[/img]和备择假设[img=20x25]180318000c91eec.png[/img]是两个对立面; C: 重点保护原假设[img=25x24]1803180004c2a2c.png[/img]; D: 等号一定放在原假设[img=25x24]1803180004c2a2c.png[/img].
显著性假设检验中关于原假设[img=25x24]180317fff403c2c.png[/img]和备择假设[img=20x25]180317fffbf5b05.png[/img]的叙述不正确的是（ ） A: 原假设[img=25x24]1803180004c2a2c.png[/img]和备择假设[img=20x25]180318000c91eec.png[/img]地位是平等的; B: 原假设[img=25x24]1803180004c2a2c.png[/img]和备择假设[img=20x25]180318000c91eec.png[/img]是两个对立面; C: 重点保护原假设[img=25x24]1803180004c2a2c.png[/img]; D: 等号一定放在原假设[img=25x24]1803180004c2a2c.png[/img].
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHkAAAA+CAYAAAAPp7SdAAAFqElEQVR4nO2cPXKzMBCGuYNuQOEbcAJSUKdIOjrnAIwPwKTWeNLjnkmtIb0vwAE4gDmADvB+RWb5AAuQ+LOCeWdchDjSokdarbRSHOzavJxHG7Bree2Qn0A75CfQDvkJtEOeQY7jGH1Wt2/1GjeoR4Azkd3W/QHZDhjYIU/WDvkJtEN+Au2QN66/ABjYOGQpJT4/PyGlXKT8HbIF4pyDc75Y+TvkB0pKiTiOwRhDnueL1bNDVkhKifP5DMYYHMcB5xxhGMJ1XRRFAd/3q10hIQSklDgej/B9v+FypZSIoqgqx/M83G43AMD1eq2e04dGc7t+xhiSJBn1Ll2A8zxHEAQIw7B6liQJGGN377GWVoMspYTv+/A8D0VRAPh9+cPh0GgQIUQFvSxLhGHY+H2e52CM4Xg8VuWEYdhwy7fbDa7rNp5R/YwxZFnWKKvdGXSkgiyEqMoiLxLHcWXnozQKcp7n8DwPjuMgiqLB71MDt3syNYoQonpGUH9+fpT1MsbuoB8Oh4ZbFkLcuWrO+V1dXXbpqM9Vp2kKxhg8z1t0utCVMWQaJe0e2yfOufJ7bRhUdhzHlfutKwxDLSCq74VheGcDdZquMvsSCn2Qp3SeJWQMWQgBzvlgA5FUrpPUhkEjO03Tu+9SfUMutas+KpvmYIoBGGON0Q004apA6wRcnHO4rqvsrGvLGHJ7/huSynXS8/Y82NcwKtduUh/wPwAicEEQDM6XYyDfbjecTidlB3qEjCCTG6rPiUNSgSuKAm9vbw0YVHZXB+qCXBRFFUgB/S49TVPEcTxq/q2DHYJ8uVxQlqVxWy2lVSDXXXCWZUiSpILx/f2Noigqd9zV81XTQ5ZlOJ1O1c91Vy2EaJRFfx9FEcqyNHltLci0HMyyrOq49I4UZT9KoyCbBBT0N7SepVFHgdD1egWgN4dR1Nq1xi2KAq7rIgiCxuim3wVB0Fg/B0GgHf0Oneyg4LIeT9DUEUXRbAFYfZmmO9gWh2yDkiRpdIiyLHG5XKploM68+cjjO20Neb22jCwmd2hL1Kgj2lxR2Uud9q9B7nsnlZ4CMm3a1L1PWZaI4xhBEPyZdyHp7heQNg8Z+A3Q2vPx4XDA+Xz+U9MO0L/v0KVRkJfO7uz6ryzLqtjheDxWwWee59rJkB2ypapn2milQIB930eaptrJECPIFNXtkJeXaq9d5ap1kiE7ZAvVtbunyrjpLGsXgWx6beSZP231QeuKqoc2kvY52TJ1bXTQ7ll7l0snGbJDtkwqV53nOT4+PpQgdZIhVkGe6uq2oHbenBI65JK/vr7w/v5ulAyxajNkDnBSSlwuF+s2OUzsiqLoLqFDCZDr9WqcDLEG8lyAlzxMP1U0f65t36gslK2QoyiyPlbI81zr8OOc2gxkIcTqjTdWYRiueixoE5BNUoY2SAixak5+1EG+uQ2cOopVO0HAb2R6PB6ty5p12buUjFuXc24dZNWOD+cch8MBjuNYB3lMunCKRkGe+wTiHK66q+PRXStdyLfbDS8vL4t2irWPUWm1LqW86GD93HPfFMg0Kro6no2Qx9g1RYOt274WM7dhXYB1E+Kq+1F1rQXZ9DajKpW4lLSGEJ2dXuIClwqyye1AGyCPuc3YdT9sCT18A7jPVeskxIfuSK3prk1uM6puWS6lVSD3JRT6IOsEKFNHchiGWskQnWDTJKDazEiuw1WB1gm4hhLiNrhrE3vrdm0CcqOiEZB1EuI2Rdcmtxmtiq5nrawFegiyTkLcpnWy7m1GK9fJs1WmAXnM7cAuFymlxOvrK1zX1XaLppDH2Dt0TXdurR5dD53sGHM7sOv/howJnsZAnsPeJWUd5DFae2RMlfVZqMkVLnRGa+2GmyKr88m2K4oi63PK1p8MsV1SSpxOJ6vSinU9yr5NQQa2cVpzbm0O8q577ZCfQDvkJ9A/oz2jHRMd3XEAAAAASUVORK5CYII=" />=（ ） A: (atan(x^(1/2))+C B: (atan(x)^2+C C: (atan(x^(1/2))^2+C D: (atan(x^2)^(1/2)+C
<img src="data:image/png;base64,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" />=（ ） A: (atan(x^(1/2))+C B: (atan(x)^2+C C: (atan(x^(1/2))^2+C D: (atan(x^2)^(1/2)+C
2、Snagit 软件捕获的图片可以保存为哪些格式？( ) 分析：此题解析方法可以用排除法，Doc是word文档，SWF是动画，PNG和JPG是常见的图片格式。 A: PNG B: SWF C: JPG D: DOC
2、Snagit 软件捕获的图片可以保存为哪些格式？( ) 分析：此题解析方法可以用排除法，Doc是word文档，SWF是动画，PNG和JPG是常见的图片格式。 A: PNG B: SWF C: JPG D: DOC
若\( \int {f(x)dx = {x^2} + C} \)，则\( \int {xf(1 - {x^2})dx = } \)( ) A: \( 2{(1 - {x^2})^2} + C \) B: \( - {1 \over 2}{(1 - {x^2})^2} + C \) C: \( {1 \over 2}{(1 - {x^2})^2} + C \) D: \( - 2{(1 - {x^2})^2} + C \)
若\( \int {f(x)dx = {x^2} + C} \)，则\( \int {xf(1 - {x^2})dx = } \)( ) A: \( 2{(1 - {x^2})^2} + C \) B: \( - {1 \over 2}{(1 - {x^2})^2} + C \) C: \( {1 \over 2}{(1 - {x^2})^2} + C \) D: \( - 2{(1 - {x^2})^2} + C \)
HbF的构成主要是（） A: α2β2 B: α2δ2 C: ζ2ε2 D: α2γ2 E: ζ2γ2
HbF的构成主要是（） A: α2β2 B: α2δ2 C: ζ2ε2 D: α2γ2 E: ζ2γ2
成年人红细胞中的血红蛋白主要结构为（）。 A: Aα2ε2 B: Bα2γ2 C: Cα2β2 D: Dβ2γ2 E: Eβ2ε2
成年人红细胞中的血红蛋白主要结构为（）。 A: Aα2ε2 B: Bα2γ2 C: Cα2β2 D: Dβ2γ2 E: Eβ2ε2
正常人血红蛋白多肽链的组成是 A: α2β2 B: α2γ2 C: α2ε2 D: α2δ2 E: σ2β2
正常人血红蛋白多肽链的组成是 A: α2β2 B: α2γ2 C: α2ε2 D: α2δ2 E: σ2β2