QR519MHA手动变速器齿轮油的加注量为()L。
A.2
B.2.1
C.2.4
D.2.5
参考答案:B
--Does he have to eat fruits every day? -- Yes, .
A.he is
B.he has
C.he does
D.he doesn’t
已知反应:3A+4B⇌C+2D 其反应速率可以分别用v(A)、v(B)、v(C)、v(D)[mol/(L•min)]表示,则正确的关系是( )
A.v(C)=13v(A)
B.v(B)=43v(C)
C.v(C)=4 v(B)
D.v(D)=12v(C)