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型的脂肪酸排列得更有序,是按同一方向排列的,它的熔点高,密度大,稳定性好。
选项: A:β’
B:β
C:α
D:α’
棉子油、棕榈油、菜籽油、乳脂和牛脂易形成稳定的 型晶体。
选项: A:β’
B:β
C:α
D:α’
A. L-α氨基酸
B:B. L-β氨基酸
C:C. D-α氨基酸
D:D. D-β氨基酸
α-1,4 α-1,6
B:α-1,4 α-1,4
C:α-1,6 α-1,6
D:α-1,6 α-1,4
}
class Beta extends Alpha {
String getType() { return "beta"; }
}
class Gamma extends Beta {
String getType() { return "gamma"; }
public static void main(String] args) {
Alpha g1 = new Beta();
Alpha g2 = new Gamma();
System.out.println(g1.getType() + " " + g2.getType());
}
}
选项: A:alpha alpha
B:gamma gamma
C:alpha beta
D:beta gamma
">5.下面程序运行结果为( )。class Alpha {
String getType() { return "alpha"; }
}
class Beta extends Alpha {
String getType() { return "beta"; }
}
class Gamma extends Beta {
String getType() { return "gamma"; }
public static void main(String] args) {
Alpha g1 = new Beta();
Alpha g2 = new Gamma();
System.out.println(g1.getType() + " " + g2.getType());
}
}
选项: A:alpha alpha
B:gamma gamma
C:alpha beta
D:beta gamma
username=input('请输入用户名')
password=input('请输入密码')
if username=='jxz'and password=='123456':
print('登陆成功')
else:
print('登陆失败')
B:username=input('请输入用户名')
password=input('请输入密码')
if username=='jxz' or password=='123456':
print('登陆成功')
else:
print('登陆失败')
C:username=’jxz’
password=’123456’
if username='jxz'and password='123456':
print('登陆成功')
else:
print('登陆失败')
D:username=input('请输入用户名')
password=input('请输入密码')
if username='jxz'and password='123456':
print('登陆成功')
elif:
print('登陆失败')
cut back
B:cut down
C:cut in
D:cut off
isn’t compatible with
B:is no better than
C:is weaker than
D:can’t keep his temper with
β'
B:β
C:α
D:α'
α受体激动药
B:β受体激动药
C:α、β受体激动药
D:M受体激动药
Α2受体激动药
若a在平面α内,l在平面α外,a//l,则l //平面α
B:若面α//面β,a在平面α内,则l //平面β
C:若a//面α,a在平面β内,面α∩面β=l,则l //a
D:若直线a//面α,b//面α,则b//a
I’m sorry.
B:It’s noisy.
C:I’d like
D:It’s wet.
α
B:β
C:γ
D:δ
E:ψβ1
大豆 豆腐 豆浆
B:豆腐 豆浆 大豆
C:豆浆 大豆 豆腐
D:豆腐 大豆 豆浆
E:豆浆 豆腐 大豆
Open the door, please.
B:Don’t open the window.
C:Open the window, please.
The pleasure is mine.
B:There is a chance of rain
C:It’s wonderful.
D:That’s terrible.
Me, too.
B:Thank you.
C:Not at all.
D:That’s nothing.
Me, too.
B:Thank you.
C:Not at all.
D:That’s nothing.
若面α∩面β=φ,则α//β
B:若直线l上有两点在平面α内,则直线l与平面α相交
C:若直线l与平面α内两条相交直线垂直,则l⊥α
D:若面α与面β有一个公共点,则面α与面β相交
{ This movie is so impressive that we can’t help ________.
选项: A:cry
B:crying
C:cried
D:to cry
单击工具箱中的快速蒙版图标
B:建立一个选区
C:选择一个Alpha通道
D:在编辑菜单中选择快速蒙版
软脂酸
B:油酸
C:亚油酸
D:亚麻酸
E:花生四烯酸
distinguish
B:treatment
C:charged
D:programmed
E:monitored
F:replace
G:delivered
The three boys were all muscular
B:They didn’t look anything alike,yet they were all exactly alike
C:Every one of them was pale-looking
D:Every one of them bad dark eyes wiht dark shadows underneath