柴油机散热器经常缺水,但又无发现任何外漏处,下列哪种判断是对的()。
A、查看排气管
B、查看波纹管
C、查看废气处理箱
D、查看机油面
E、查看补水管
参考答案:A, B, D
下列投资工具中,违约风险相对最小的是( )。
A.国债
B.股票
C.企业债券
D.期货
-- If only I _______ the teachers instructions, in which case I ______ not so unlucky now.
-- It’s high time that you _______ yourself.
A.followed; am; should reflect
B.had followed; would have been; reflected
C.would follow; would be; reflect
D.had followed; would be; reflected