A.5
B.7
C.4
D.3

A.\(16\)
B.\(8\)  
C.\(2\)  
D.\(4\)

A.7
B.6
C.4
D.5

A.\({S_{xq}} = 9\pi \)
B.\({S_{xq}} = \dfrac{{9\pi }}{2}\)
C.\({S_{xq}} = \dfrac{{9\sqrt 2 \pi }}{4}\)  
D.\({S_{xq}} = \dfrac{{9\pi \sqrt 2 }}{2}\)

A.2
B.\(\dfrac{1}{2}\)  
C.3
D.\(\dfrac{1}{3}\)

A.3
B.1
C.2
D.4

A.\(\overrightarrow {{u_1}}  = \left( {0; - 1; - 2} \right)\)
B.\(\overrightarrow {{u_2}}  = \left( {2; - 1;0} \right)\)
C.\(\overrightarrow {{u_3}}  = \left( { - 1;0;1} \right)\)  
D.\(\overrightarrow {{u_4}}  = \left( { - 1;1; - 1} \right)\)

A.\( - 101376\)
B.25344.  
C.101376.  
D.\( - 25344\)

A.\(2.\)
B.\(4.\)  
C.\(3.\)  
D.\(1.\)

A.\(\dfrac{{x - 1}}{1} = \dfrac{y}{1} = \dfrac{{z - 1}}{{ - 1}}\)
B.\(\dfrac{{x + 1}}{{ - 1}} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 2}}{1}\)
C.\(\dfrac{{x - 1}}{1} = \dfrac{{y - 2}}{1} = \dfrac{{z - 3}}{{ - 1}}\) \(\)
D.\(\dfrac{{x - 1}}{1} = \dfrac{y}{{ - 1}} = \dfrac{{z - 1}}{1}\)