/ ^ `$ c: m5 b$ z) p第七题我国铁路的基本知识 2 [$ Q* P/ b v& W$ i2 F目前我国铁路的标准轨距为() ! `6 K) c! j- hA、1345mm B、1543mm C、1435mm8 p0 H9 Q @8 L0 Y(欢迎访问avcar:https://avcar.vip)
) G B6 [3 u6 I) }0 t! T(欢迎访问avcar:https://avcar.vip)
第八题食品科学的& h# [* k4 ?" j; n. o# |(欢迎访问avcar:https://avcar.vip)
利用美拉德反应不会() 0 ^# L% M1 N+ y, W* c1 ^& nA、产生不同氨基酸 B、产生不同的风味 $ A! W3 X* P4 T/ kC、产生金黄色光泽 D、产生酸味成分) K; z. W) l m3 H- x(欢迎访问avcar:https://avcar.vip)
. p* i; k6 ^7 K1 o% l(欢迎访问avcar:https://avcar.vip)
第九题化学英语题1 g) b$ |/ N9 C+ S* v7 D(欢迎访问avcar:https://avcar.vip)
What is always correct about the molecular ion, M+, in a mass spectrum of a compound?3 x% g/ ^% G+ F# v2 y' d: k(欢迎访问avcar:https://avcar.vip)
A. The M+ ion peak has the smallest m/z ratio in the mass spectrum. " z: M, `4 B }7 z, D0 u' L* P+ {B. The m/z ratio of the M+ ion peak gives the relative molecular mass of the molecule.3 @) { I3 u$ |5 M8 l# g" f(欢迎访问avcar:https://avcar.vip)
C. The M+ ion is the most stable fragment formed during electron bombardment.1 k* E# E0 a; C; ~# ~$ j% [(欢迎访问avcar:https://avcar.vip)
D. The M+ ion peak has the greatest intensity in the mass spectrum.+ u! u1 t# W% V, [/ C& r" o2 r( [(欢迎访问avcar:https://avcar.vip)