第3题: [单项选择]His panic was ______, and passed when he began to speak. A. temporary B. suspicious C. transient D. substantial 参考答案:C 答案解析:[解析] 形容词辨义。这四个选项的词性都是形容词,其中temporary表示“暂时的,临时的,临时性的”;suspicious表示“可疑的,怀疑的”,常与介词of连用;transient表示“短暂的,
第28题: [单项选择]Cold weather starting of a diesel engine may be made easier by() A. decreasing the compression ratio B. using a special fuel having a high ignition temperature C. increasing the starting air supply D. heating the jacket water 参考答案:D