第25题: [单项选择]危急保安器运行时,进行喷油试验的目的是()。 A. 危急停机; B. 检查危急保安器的动作转速; C. 检查打闸机构的灵敏性; D. 活动危急保安器,避免其卡涩。 参考答案:D
第26题: [单项选择]整型变量x和Y的值相等,且为非0值,则以下选项中结果为0的表达式是______。 A. X‖Y B. X C. X&Y D. X^Y 参考答案:D 答案解析:[评析] “‖”为或运算符,当其左右表达式中只要一个为非零则整个表达式的值1。|是按位或,&是按位与,^是按位异或,这三位运算符是按值的二进制位来比较的。
第35题: [单项选择]What happened in the woman’s home [A] Her husband was going into the hospital for an operation. [B] Her baby was going to have a regular check. [C] She felt sick and wanted to have a check. 参考答案:B 答案解析:[解析] 事实细节题。由the reason I asked is my baby is going to the hospital tomorrow for a regular check可知她的小